1854. Maps show altitude profiles (by inverse fahrenheit scale for boiling of water) for two routes traversed by Gibbon, east to west, and north to south... Supt. of Govt. Docs? (Washington, DC).
Search Results
1854. Gibbon, Lardner. Inset map of Madeira River. on sheet 52 x 79 centimeters Scale [1:3801600] General Map Collection. A. Hoen (Baltimore).