Federal census tracts : City of Los Angeles and adjacent areas.
Tracts within the City of Los Angeles are outlined and shaded in yellow. Diagrams show population changes in each tract from 1930 to 1940. "Lloyd Aldrich, City Engineer." Maps & Research Division, T J Rice, Deputy Engineer." Blue line print.
UCLA LibraryLos Angeles (Calif.). Bureau of Engineering.
1940
Los Angeles : Bureau of Engineering
1:120 000