[1] Course indicator of U.S.S. "Idaho" -- [2] [World map showing path of U.S.S. Idaho from New York to San Francisco] -- [3] Detailed chart of Ombay Passage, Timor & East Indies -- [4] Chart showing Oby Major & Gillolo [nautical chart of the Halmahera Sea] -- [5] Chart showing great circle and sailing route from Rio de Janerio to Cape Town -- [6] Chart showing Celebes & East Indies. and Color: pen and ink.