Watson, GaylordGreenwich and Washington prime meridians. Included with Illinois map: tables giving "Highest mountains and plateaus," "Longest rivers of the world," and "Largest lakes." Numbered 39-42. 2 maps on one sheet: back to back, col.; 30 x 46 cm. and 31 x 21 cm., sheet 35 x 56 cm.JPEGc27182e9-bef6-473f-aa0f-ce6751679ecfengPublicWatson's atlas map of Michigan & Wisconsin; Watson's atlas map of IllinoisMapsGreat Lakes1885University of Michigan