Contains: Witzenhausen (colonial school), 12 May 1924 (a letter, a postcard with a view of the wine and liqueur shop Artur Schulz in Witzenhausen); 19 May 1924; 22 May 1924; 24 May 1924; n/a 1924; 23 May 1924; 23 May 1924; 23 May 1924; 24 May 1924; 24 May 1924; 23 May 1924; 24 May 1924; 23 May 1924; 23 May 1924; 24 May 1924; 23 May 1924; 23 May 1924. June 1924; 9 August 1924; 6 August 1924; 14 August 1924; 18 October 1924; 8 November 1924; 16 November 1924; 1 December 1924; 7 December 1924; 17 December 1924 (15 letters, one postcard) Contains: Witzenhausen (Colonial School), 4 February 1925; 26 April 1925; 13 May 1925 (three letters) Contains: Nordhausen, 29 May 1925 (postcard with view of Nordhausen main station) Includes: Witzenhausen (colonial school), 9 June 1925; 7 July 1925; 24 July 1925; 13 August 1925; 23 August 1925; 14 October 1925 (postcard); 31 October 1925; 7 November 1925; 23 November 1925; 6 December 1925 (nine letters) Contains: Witzenhausen (colonial school), 19 January 1926; 14 February 1926; 9 March 1926 (telegram) (two letters, one telegram) Contains: Hohenebra, 6 September 1926; 28 September 1926; 20 September 1926 (three letters) Contains: Nordhausen, 30 October 1926 - with: Letter from V. Küdrich, Deutsche Kolonialschule Witzenhausen: Wilhelmsdorf, 29 October 1926 (two letters) Contains: Hohenebra, 6 November 1926; 27 December 1926 (contains two letters): Hamburg, 1 May 1927; 30 May 1927 (two letters) Contains: Lauenburg (Elbe), 6 June 1927 (postcard with panorama of Lauenburg from Hohnstorf) Includes: Hamburg, 25 June 1927; 5 July 1927; 11 July 1927; 6 August 1927; 24 September 1927; 17 October 1927; 5 November 1927 (for Dr W Johannes Wentzel); 11 November 1927; 13 December 1927 (nine letters) Contains: Hamburg, 10 January 1928; 12 February 1928; 16 March 1928; 22 April 1928; 14 May 1928; 18 June 1928 (postcard, postmark); 12 July 1928 (with Dr W Johannes Wentzel); 28 July 1928 (postcard); 3 September 1928; 6 September 1928; 25 September 1928; 26 September 1928; 14 November 1928 (eleven letters, two postcards) Contains: Ramelsloh (Lüneburger Heide), December 16, 1928 (postcard with view of the church of Ramelsloh) Contains: Hamburg, January 26, 1929 (with drawing); February 1, 1929 (with Dr. W. Johannes Wentzel); February 13, 1929; March 2, 1929 - with: Letter from Wilhelm Wilbrand to girlfriend Anni; March 10, 1929; June 8, 1929; August 12, 1929; September 7, 1929; September 16, 1929; September 30, 1929; October 18, 1929; November 14, 1929; December 20, 1929 (14 letters) Contains: Hamburg, January 21, 1930 (by Dr. W. Johannes Wentzel) - with: Letter from Wolfgang Wentzel, uncle of Wilhelm, to Kurt Woermann, Hamburg: Hamburg, January 20, 1930: Future Possibilities in Africa (two letters) Contains: Genoa, 31. May 1931 (postcard with view of the war memorial in Genoa); 1. June 1931 (postcard with view of the ship Ussukuma) Contains: on the Ussukuma, 5. June 1931 - with: postcard with text and notes of the song 'Weckruf' (a letter) Contains: Bregenz, 4 June 1940 (Picture postcard with Bregenz old town) Includes: Friedrichshafen am Bodensee, 20 May 1940 (postcard with castle church and marina) Includes: Berlin-Dahlem, 24 September 1941 (one letter)

Reports of the Departments of General Administration. - Victoria 1905/06, 1906 [fol. 1 - 9] Distribution of European Civil Servants. - Victoria, 23 January 1906 [fol. 10] Companies. - Randad & Stein, Hamburg. - Victoria, 23 March 1906 [fol. 11] Status of the white population. - Victoria, January 1905 [fol. 12 - 23] Causes of death of the white population. - Victoria, 1905 [fol. 14] Marital status of the white population. - Victoria, January 1905 [fol. 17 - 18] Plantation statistics. - Victoria, District, 1905 - 1906 [fol. 28 - 43] Reports of the Departments of General Administration. - Duala, District Office, Annual Reports 1905/06, 1906 [fol. 47 - 53] Companies. - Randad & Stein, Hamburg. - Duala, 22 July 1906 [fol. 56 - 57] Status of the white population. - Duala, January 1906 [fol. 59 - 67] Companies, societies and plantations in the districts of the Cameroon protectorate. - Directories. - Kribi, 31 December 1905 [fol. 84 - 87] Marital status of the white population. - Duala, January 1906 [fol. 60] Reports of the departments of the general administration. - Kribi 1905/06, 1906 [fol. 78] Reports of the departments of the general administration. - Edea 1905/06, 1906 [fol. 101 - 112] Distribution of European civil servants. - Lists. - Edea, 1 April 1906 [fol. 113] Movement of the white population. - Edea, January 1906 [fol. 114 - 115] Companies.- Randad & Stein, Hamburg. - Edea, 1 April 1906 [fol. 116] Firms Randad & Stein, Hamburg. - Edea, 1 Jan. 1906 [fol. 119] Reports of the general administration departments. - Yaoundé 1905/06, 1906 [fol. 126 - 130] Movement of the white population. - Victoria, 1905 [fol. 131] Movement of the white population. - Yaoundé, 1 April 1906 [fol. 131] Movement of the white population. - Yaoundé - Planning, 1 April 1906 [fol. 131] Reports of the departments of the general administration. - Johann-Albrechtshöhe 1905/06, 1906 [fol. 134 - 136] Status of the white population. - Johann-Albrechtshöhe (Barombi-See), January 1906, March 1906, 15 April 1906 [fol. 137 - 170] Marital status of the white population. - Johann-Albrechtshöhe (Lake Barombi), January 1906 [fol. 138] Movement of the white population. - Johann-Albrechtshöhe (Lake Barombi), 1905 [fol. 144] Status of the indigenous population. - Johann-Albrechtshöhe (Lake Barombi), 1 January 1906 [fol. 145 - 147] Status of the non-native, non-white population. - Johann-Albrechtshöhe (Lake Barombi), 1 January 1906 [fol. 148] Causes of death of the white population. - Johann-Albrechtshöhe (Lake Barombi), 1905 [fol. 149] Firms.- Randad & Stein, Hamburg. - Johann-Albrechtshöhe (Lake Barombi), January 1906 [fol. 150] Plantation statistics. - Johann-Albrechtshöhe (Lake Barombi), 1905 [fol. 151 - 155] Distribution of European members of the Schutztruppe for Cameroon. - Lists, some with names. - Johann-Albrechtshöhe, 1 January 1906 [fol. 156] Companies, societies and plantations in the districts of the Cameroon Protectorate. - Directories. - Johann-Albrechtshöhe (Lake Barombi), 5 Dec. 1905 [fol. 158] Reports of the departments of the general administration. - Dschang (Tinto, Fontemdorf), 31 Dec. 1905 [fol. 173] Companies, societies and plantations in the districts of the Cameroon Protectorate. - Directories. - Ossidinge, 31 Dec. 1905 [fol. 173] Reports of the departments of the general administration. - Bare 1905/06, 1906 [fol. 169 - 174] Distribution of the African members of the protection force for Cameroon. - Strength report. - Bascho (Basso), March 1906 [fol. 172] Reports of the departments of the general administration. - Dschang (Tinto, Fontemdorf) 1905/06, 1906 [fol. 173 - 186] Movement of the white population. - Joko, 1905 - March 1906 [fol. 187] Movement of the white population. - Fontemdorf-Tinto, 14 July 1906 [fol. 187 - 189] Fontemdorf (Tinto). - Budget - Economic control lists, 31 March 1906 [fol. 190 - 191] Reports of the general administration departments. - Rio del Rey 1905/06, 1906 [fol. 193 - 195] Causes of death of the white population. - Joko, 1905 - March 1906 [fol. 194] Companies. - Randad & Stein, Hamburg. - Rio del Rey, 1 April 1906 [fol. 198] Reports of the departments of the general administration. - Jabassi 1905/06, 1906 [fol. 200 - 205] Reports of the departments of the general administration. - Lolodorf 1905/06, 1906 [fol. 211 - 217] Distribution of the European members of the Schutztruppe for Cameroon. - Lists, some with names. - Lolodorf, 1 January 1906 [fol. 219] Companies. - Randad & Stein, Hamburg. - Lolodorf, 1 January 1906 [fol. 221 - 223] Status of the white population. - Lolodorf, January 1906 [fol. 218 - 226] Reports of the departments of the general administration. - Kampo 1905/06, 1906 [fol. 227 - 230] Status of the non-native-born non-white population. - Kampo, January 1906 [fol. 231] Reports of the departments of the general administration. - Buea 1905/06, 1906 [fol. 234 - 236] Plantation statistics. - Buea, District, 1906 [fol. 237 - 240] Reports of the general administration departments. - Ebolowa 1905/06, 1906 [fol. 244 - 247] Companies. - Randad & Stein, Hamburg. - Ebolowa, 1 January 1906 [fol. 248 - 249] Reports of the general administration departments. - Bamenda 1905/06, 1906 [fol. 251 - 260] Reports of the departments of the general administration. - Joko 1905/06, 1906 [fol. 262 - 281] Status of the white population. - Joko, 31 March 1906 [fol. 283] Status of the white population. - Kampo (South Cameroon Society only), 1906 [fol. 283] Status of the white population. - Joko, January 1906 [fol. 283] Companies. - Randad & Stein, Hamburg. - Bamenda, 17 June 1907 [fol. 284] Distribution of the European members of the Schutztruppe for Cameroon. - Lists, some with names. - Joko, 1 Jan. 1906 [fol. 285] Reports of the departments of the general administration. - Banjo 1905/06, 1906 [fol. 288 - 294] Companies. - Randad & Stein, Hamburg. - Joko, 31 March 1906 [fol. 284] Causes of death of the white population. - Banjo, 1905 [fol. 296] Marital status of the white population. - Banjo, January 1906 [fol. 298] Companies, societies and plantations in the districts of the Cameroon Protectorate. - Directories. - Lomie, 31 March 1905 [fol. 303 - 304] Marital status of the white population. - Lomie (administration at Ngoko), January 1906 [fol. 309] Companies. - Randad & Stein, Hamburg. - Secondary factories of the main factory in Garua. - List, July 1906 [fol. 301] Companies, societies and plantations in the districts of the Cameroon Protectorate. - Directories. - Lomie, 1 January 1906 [fol. 303 - 304] Marital status of the white population. - Kribi, 31 March 1906 [fol. 309] Movement of the white population. - Lomie (administration at Ngoko), 1905 [fol. 310] Reports of the departments of the general administration. - Duala. Main Customs Office. Annual reports 1905, 1905 [fol. 316 - 317] Reports of the departments of the general administration. - Duala, Bezirksksamtskasse, annual reports 1905, 1905 [fol. 318] Public Health: Annual reports. - Annual reports 1905/06, 1906 [fol. 321 - 328] Native cocoa crops in Victoria district, - Directory, 1906 [fol. 332 - 334] Flotilla budgeting : revenue of government steamers. - HERZOGIN ELISABETH and NACHTIGAL, 1905 - 1906 [fol. 341] Companies. - A. Herschell & Co, Liverpool, Duala branch. - Takeover of the business of the company, which ceased trading on 20 May 1904, by John Holt & Co, Ltd, 1906 [fol. 342] Companies. - John Holt & Co, Ltd - Takeover of the business of the company A. Herschell & Co, Liverpool, Duala branch, which ceased to exist on 20 May 1904, 1906 [fol. 342] Activities of the chambers of commerce in Duala and Kribi. - Decree of the Foreign Office on the failure of the governorate to report and its justification with the non-appearance of the Chamber of Commerce in Duala and the alleged non-existence of the Chamber of Commerce for the southern district in Kribi, 1906 [fol. 346 - 352] Labour relations in the districts. - Report by Labour Commissioner von Lüdinghausen. - Victoria, 1906 [fol. 358 - 360] Regulations of the Gouvernement. - Directories, April 1905 June 1906 [fol. 364] Reports of the departments of the general administration. - Buea. - Annual report 1905/06, 1906 [fol. 366] Reports of the departments of the general administration. - Buea. - Buea Governorate Workshop 1905/06, 1906 [fol. 366] Plantation Statistics. - Entire protectorate, 1905 [fol. 367 - 372] Status of the white population. - Entire protectorate, March 1906 [fol. 375 - 388] Sea and river traffic in the Kamerun protectorate (records). - Coastal sites, January-December 1905 [fol. 373] Annual reports of the governorate. - Annual Report (1905/06) Volume 1: Draft [fol. 394 - 438] Customs. - Accounting year 1905/06, 1906 [fol. 439] Revenue of the protectorate. - Overviews. - Accounting year 1904/05, 1905 [fol. 441] Revenue from head and metallurgical taxes as well as tribute payments in the accounting years 1903/04 and 1904/05 - Overview, 1905 [fol. 442] Decrees and decrees, announcements and ordinances of the governorate. - General 1896, 1898 Sketch of the landscapes north of the Sanaga River in the Edea district, ca. l:300 000, Krücke, Bezirksamtmann, (1906) Ordinances and decrees. - Kribi , (signature uncertain), 1906

Workers' mortality on the plantations due to dysentery and measures to combat it - Memorandum by Deputy Governor Dr Gleim, 1907 [fol. 2 - 3] Reports of the departments of the general administration. - Bare, January - December 1906, 1907 [fol. 10] Status of the white population. - Jabassi, January 1907 [fol. 14 - 15] Reports of the departments of the general administration. - Duala. Main magazine. Annual reports 1906/07, 1907 [fol. 25 - 30] Reports of the departments of the general administration. - Lolodorf 1906/07, 1907 [fol. 31 - 35] Reports of the departments of the general administration. - Victoria 1906/07, 1907 [fol. 37 - 47] Hydraulic engineering. - Victoria, district. - Construction of the 1005m drainage and reclamation canal from Victoria to the sea. - Report by Deputy District Officer Kirchhof on the merits of Kiessler, the prisoner in charge of supervising the construction, 1907 [fol. 48] Reports of the general administration departments. - Jabassi 1906/07, 1907 [fol. 52 - 71] Reports of the general administration departments. - Duala. Harbour Office, annual reports 1906/07, 1907 [fol. 57 - 61] Reports of the general administration departments. - Bare 1906/07, 1907 [fol. 77 - 91] Reports of the general administration departments. - Ossidinge 1906/07, 1907 [fol. 92 - 99] Cultivation trials in the experimental gardens. - Experience reports in accordance with Circular No. 242 of 25 April 1907. - Ossidinge [fol. 100 - 103] Reports from the general administration departments. - Johann-Albrechtshöhe 1906/07, 1907 [fol. 104 - 106] Reports of the general administration departments. - Duala, District Office, Annual Reports 1906/07, 1907 [fol. 108 - 112] Reports of the general administration departments. - Edea 1906/07, 1907 [fol. 115 - 128] Reports of the departments of the general administration. - Rio del Rey 1906/07, 1907 [fol. 132 - 137] Reports of the departments of the general administration. - Dschang 1906/07, 1907 [fol. 138 - 148] Reports of the departments of the general administration. - Bare February - March 1907, 1907 [fol. 138 - 148] Reports of the general administration departments. - Joko 1906/07, 1907 [fol. 149 - 160] Reports of the general administration departments. - Ossidinge 1905/06, 1906 [fol. 163 - 171] Reports of the departments of the general administration. - Bamenda 1906/07, 1907 [fol. 196 - 201] Reports of the departments of the general administration. - Banjo 1906/07, 1907 [fol. 184 - 190] Budget, treasury and accounting. - Banjo. - Budget control lists - April 1906 - March 1907 [fol. 191 - 192] Annual report of the Victoria District Court: 1 April 1906 - 31 March 1907 [fol. 204 - 207] Reports of the general administration departments. - Lomie 1906/07, 1907 [fol. 209 - 230] Public Health : Annual Reports 1906/07, 1907 [fol. 237 - 242] Veterinary Services. - Annual report 1906/07, 1907 [fol. 241] Reports of the general administration departments. - Ebolowa 1906/07, 1907 [fol. 248 - 258] Reports of the general administration departments. - Buea 1906/07, 1907 [fol. 261 - 273] Reports of the departments of the general administration. - Kampo 1906/07, 1907 [fol. 276 - 282] Reports of the departments of the general administration. - Kribi 1906/07, 1907 [fol. 283 - 289] Annual reports of the land surveyors. - Gehlen, cadastral inspector for 1906/07, 1907 [fol. 291] Annual reports of the land surveyors. - Hahn for 1906/07, 1907 [fol. 292] Reports of the offices of the general administration. - Kusseri January-December 1906/07, 1907 [fol. 293 - 302] Status of the white population. - Bascho (Basso), May 1907 [fol. 304] Annual reports of the governorate. - Annual Report 1906/07 Volume 1, draft [fol. 306 - 349] Cultivation trials in the experimental gardens. - Field reports in accordance with Circular No. 242 of 25 April 1907 - Victoria cultivation trials in the experimental gardens. - Field reports in accordance with Circular No. 242 of 25 April 1907 - Jabassi [fol. 353] Cultivation trials in the trial gardens. - Field reports in accordance with Circular No. 242 of 25 April 1907 - Entire Cameroon Protectorate [fol. 354 - 358] Livestock breeding. - Annual Report 1906/07, 1907 [fol. 359 - 362] Decline in ivory exports from the protectorate of Cameroon. - Report, 1907 [fol. 369 - 372] Sea and river traffic in the Cameroon Protectorate (records). - Coastal sites, (April) 1906, (March) 1907 [fol. 375] Telecommunications. - Development of telecommunications in the protectorate. - Annual report 1906/07, 1907 [fol. 377] Forest administration. - Annual Report 1906/07, 1907 [fol. 379] Revenue of the Protectorate. - Overviews. - Financial year 1906/07, 1907 [fol. 380] Status of the white population. - Entire protectorate, December 1906 [fol. 382 - 400] Status of the non-native non-white population. - Entire protectorate, April 1907 [fol. 401 - 402] Status of the native population. - Entire protectorate, April 1907 [fol. 403] Government schools : Duala. - Annual Report 1906/07, 1907 [fol. 408] Government Schools. - Victoria [fol. 410] Evangelical Missionary Society in Basel. - Annual report 1906/07, 1907 [fol. 411 - 412] Missionary Society of the German Baptists. - Annual Report 1906/07, 1907 [fol. 415 - 422] Board of Foreign Missions of the Presbyterian Church in the U.S.A. - Entire Mission Field. - Annual Report 1906/07, 1907 [fol. 423 - 425] Co-operative Society of the Pallottines. - Annual Report 1906/07, 1907 [fol. 426 - 432] Government Schools: Garua. - Status report, December 1906 [fol. 433 - 434] Labour relations in the districts. - Report by the Lüdinghausen labour commissioner. - Buea, Johann-Albrechtshöhe (Lake Barombi) - Victoria, May 1907 [fol. 441 - 445] Plantation statistics. - Total protected area, 1907 [fol. 446 - 449] Annual report of the Duala Chamber of Commerce 1906/07, 1907 [fol. 480 - 481] Versuchsanstalt für Landeskultur, Victoria. - Annual report 1906/07, 1907 [fol. 451 - 465] Reports of the general administration departments. - Buea. - Annual report 1906/07, 1907 [fol. 471 - 478] Reports of the general administration departments. - Duala, District Treasury, Annual Reports 1906/07, 1907 [fol. 482 - 485] Sea and river traffic in the Cameroon Protectorate (records). - Küstenplätze, January-December 1906 [fol. 487] Sentencing in the districts of the protectorate of Cameroon (statistics), partly with lists of names. - Entire protectorate, 1906/07 [fol. 488 - 490] Ordinances of the governorate. - Directories, April 1906 March 1907 [fol. 491] Companies. - Randad & Stein, Hamburg. - Entire protectorate of Cameroon, 1907 [fol. 492 - 495] Europeans. - Numerical distribution of officers and medical officers for Cameroon to the posts and stations. - Overview, 1 January 1907 [fol. 496 - 498] Europeans. - Entire protectorate, 1 January 1907 [fol. 496 - 498] Reports of the general administration departments. - Residentur Garua 1906/07, 1907 [fol. 500 - 516] Sea and river traffic in the protectorate of Cameroon (records). - Yaoundé (Njong) see also Lomie, January-February 1907 [fol. 530] Establishment of native crops on the farm of the Buea station, 1907 [fol. 532] Reports of the departments of the general administration. - Yaoundé 1906/07, 1907 [fol. 521 - 528] Native crops. - Crops and agriculture. - Ossidinge district, 1907 [fol. 539 - 543] Crop trials in the experimental gardens. - Field reports in accordance with Circular No. 242 of 25 April 1907 - Edea [fol. 544 - 548] Crop trials in the experimental gardens. - Field reports in accordance with Circular No. 242 of 25 April 1907 - Bascho [fol. 546] Cultivation trials in the trial gardens. - Experience reports in accordance with Circular Decree No. 242 of 25 April 1907 - Duala [fol. 552 - 556] Cultivation trials in the trial gardens. - Field reports according to Circular Decree No. 242 of 25 April 1907 - Dschang with Fontem, Mbo and Bamileke area [fol. 560 - 567] Native crops. - Crops and agriculture. - Bamum (Fumban) area, 1907 [fol. 561 - 563] Crop trials in the experimental gardens. - Field reports in accordance with Circular No. 242 of 25 April 1907 - Ebolowa [fol. 564] Cultivation trials in the experimental gardens. - Field reports in accordance with Circular No. 242 of 25 April 1907. - Kampo [fol. 565] Introduction of cotton cultivation in the Bamum (Fumban) region. - Report by the gardener Stössel [fol. 569 - 574] Sketch of the district and tribal boundaries of the Joko military station, no. M, pen and ink drawing with coloured inscriptions, thick cardboard, 1907 Sketch of the district and tribal boundaries of the Joko military station - by Heigelin, First Lieutenant of the Schutztruppe for Cameroon and station chief, 1907 General sketch of the old and new Deng Deng road in the area of the Joko military station, 1: 1 000 000 Pen and ink drawing with coloured inscriptions, thick cardboard, von Oertzen, Lieutenant, 1907 Graphic representation of the water level of the Sanaga River at Edea in the period from 1. 4.1906 - 31.3.1907, 1907 Operations in the Deng-Deng area and connections to the French post Kunde, 1906 - 1907

Contains: Witzenhausen (colonial school), 12 May 1924 (a letter, a postcard with a view of the wine and liqueur shop Artur Schulz in Witzenhausen); 19 May 1924; 22 May 1924; 24 May 1924; n/a 1924; 23 May 1924; 23 May 1924; 23 May 1924; 24 May 1924; 24 May 1924; 23 May 1924; 24 May 1924; 23 May 1924; 23 May 1924; 24 May 1924; 23 May 1924; 23 May 1924. June 1924; 9 August 1924; 6 August 1924; 14 August 1924; 18 October 1924; 8 November 1924; 16 November 1924; 1 December 1924; 7 December 1924; 17 December 1924 (15 letters, one postcard) Contains: Witzenhausen (Colonial School), 4 February 1925; 26 April 1925; 13 May 1925 (three letters) Contains: Nordhausen, 29 May 1925 (postcard with view of Nordhausen main station) Includes: Witzenhausen (colonial school), 9 June 1925; 7 July 1925; 24 July 1925; 13 August 1925; 23 August 1925; 14 October 1925 (postcard); 31 October 1925; 7 November 1925; 23 November 1925; 6 December 1925 (nine letters) Contains: Witzenhausen (colonial school), 19 January 1926; 14 February 1926; 9 March 1926 (telegram) (two letters, one telegram) Contains: Hohenebra, 6 September 1926; 28 September 1926; 20 September 1926 (three letters) Contains: Nordhausen, 30 October 1926 - with: Letter from V. Küdrich, Deutsche Kolonialschule Witzenhausen: Wilhelmsdorf, 29 October 1926 (two letters) Contains: Hohenebra, 6 November 1926; 27 December 1926 (contains two letters): Hamburg, 1 May 1927; 30 May 1927 (two letters) Contains: Lauenburg (Elbe), 6 June 1927 (postcard with panorama of Lauenburg from Hohnstorf) Includes: Hamburg, 25 June 1927; 5 July 1927; 11 July 1927; 6 August 1927; 24 September 1927; 17 October 1927; 5 November 1927 (for Dr W Johannes Wentzel); 11 November 1927; 13 December 1927 (nine letters) Contains: Hamburg, 10 January 1928; 12 February 1928; 16 March 1928; 22 April 1928; 14 May 1928; 18 June 1928 (postcard, postmark); 12 July 1928 (with Dr W Johannes Wentzel); 28 July 1928 (postcard); 3 September 1928; 6 September 1928; 25 September 1928; 26 September 1928; 14 November 1928 (eleven letters, two postcards) Contains: Ramelsloh (Lüneburger Heide), December 16, 1928 (postcard with view of the church of Ramelsloh) Contains: Hamburg, January 26, 1929 (with drawing); February 1, 1929 (with Dr. W. Johannes Wentzel); February 13, 1929; March 2, 1929 - with: Letter from Wilhelm Wilbrand to girlfriend Anni; March 10, 1929; June 8, 1929; August 12, 1929; September 7, 1929; September 16, 1929; September 30, 1929; October 18, 1929; November 14, 1929; December 20, 1929 (14 letters) Contains: Hamburg, January 21, 1930 (by Dr. W. Johannes Wentzel) - with: Letter from Wolfgang Wentzel, uncle of Wilhelm, to Kurt Woermann, Hamburg: Hamburg, January 20, 1930: Future Possibilities in Africa (two letters) Contains: Genoa, 31. May 1931 (postcard with view of the war memorial in Genoa); 1. June 1931 (postcard with view of the ship Ussukuma) Contains: on the Ussukuma, 5. June 1931 - with: postcard with text and notes of the song 'Weckruf' (a letter) Contains: Bregenz, 4 June 1940 (Picture postcard with Bregenz old town) Includes: Friedrichshafen am Bodensee, 20 May 1940 (postcard with castle church and marina) Includes: Berlin-Dahlem, 24 September 1941 (one letter)