1. Pittsburgh streetcar map in 2D.
2. Pittsburgh streetcar map in 3D.
(#2 is a 1910 model, submitted to Mayor's office, showing the actual elevation of streetcar lines in #Pittsburgh, that city of inclines.)
1. Map of Los Angeles streetcar/interurban lines.
2. Relief map of same LA lines (1920).
(Transit relief maps are as rare as they are wonderful.)