David Rumsey
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Website
Ontario. Detail Irrigation Map.
5830.006
pilot
California State Engineering Department. Detail Irrigation Map. Ontario Sheet. Wm. Ham. Hall, State Engineer. Irrigation Data 1888. Scale 1 1/2 Inches to One Mile. George Sandow, Draughtsman.
1888
California Department of Engineering
70 × 53 cm
1 : 42240