Erica _ Fischer:
Somewhat less 8-bit hachures
Erica _ Fischer:
Same area mapped with hachures in 1873
Erica _ Fischer:
"8-bit" hachures
Erica _ Fischer:
SRTM version 1 elevations for the San Francisco Bay Area
Erica _ Fischer:
SRTM version 2.1 elevations for the San Francisco Bay Area