Loading map...

1967 Map of Ontario

Name: 1967 Topographic Map of Ontario
Creator: U.S. Geological Survey
Published: 1975
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1975

About this map

The citrus-belt cities of Claremont, Upland, and Ontario exhibit rapid post-war suburbanization on this mid-1960s sheet, with purple-tinted 1973 revisions showing the expansion of residential tracts across the alluvial plains of San Antonio Creek. The map is a significant record for academic history, detailing the contiguous campuses of the Claremont Colleges, including Scripps College, Harvey Mudd College, and Pitzer College, alongside the Rancho Santa Ana Botanic Garden.

Industrial and transportation networks are firmly established, with the Southern Pacific and Union Pacific railroads paralleling major thoroughfares like the San Bernardino Freeway. In the southern reaches, the transition from urban density to the open spaces of Santa Ana Del Chino is evident near Chino, while the Ontario International Airport serves as a massive logistical hub on the eastern edge. Local genealogy is supported by the inclusion of Palomares Cem and several community landmarks such as the San Antonio Hospital.