1941
El Cajon Valley Chamber of Commerce.
1:31k
1904
Goode, R. U.; Hassan, A. F.
1:250k
1937
San Diego (Calif.). Water Department (1901-1963)
1:580k
1935
Blackburn, O.V.
1:250k
1920
Geologic Survey (U.S.)
1:1m
1917
McGlashan, H. D. (Harry Deyoe)
1:250k
1922
Chadwick, J. P.
1888
Rand McNally and Company
1:380k
1858
Campbell, Albert
1:6m
1938
Thomas Brothers
1:1m