Pacific Ocean, Micronesia and Solomon Sea: Caroline Islands and Solomon Islands; four items on one sheet: item 1, Choiseul Island; item 2, Bougainville Strait both by Lt C F Oldham, HMS Lark, 1884, showing Choiseul Bay, Cyprian Bridge Island, Masamasa Island and Oema Island; item 3, Approaching Manning Straits from NW (Choiseul Island), annotated, showing Lina Island and Towra Peak; item 4, Entrance to Port Lele (Strongs Island, Kosrae or Kusaie) and Strongs Island (Peak W by S1/4S) 20 Miles by Denton H Speer, Acting Master, HMS Serpent, showing Marteus Mount.