California - Arizona

1905

U. S. Geological Survey

1:125k

Imperial Valley tract map

1914

Rock, Geo H.

1:125k

Plan De L'Embouchure Du Rio Colorado.

1844

Duflot de Mofras, Eugene

Reconnaissance map of the Salton Sink, California

1906

E.M. Douglas; R.B. Marshall; W. Carvel Hall

1:500k

Reconnaissance map of the Salton Sink, California

1908

E.M. Douglas

1:500k

Geological Map ... Rio Colorado of the West.

1858

Ives, J.C.

1:380k

Rio Colorado of the West.

1858

Ives, J.C.

1:380k

Sheet No. 3, Department of Arizona

1876

Ward, J.W.

1:665k

Reconnaissance map of the Salton Sick California

1906

Douglas, Edward Morehouse

1:500k

Map No. 2 of the El Paso & Fort Yuma Wagon Road.

1858

Campbell, Albert

1:6m