Instructional exhibit by Frank Wiggins Trade School, showing students and teacher, ca.1920-1929 

Two students laying bricks and setting door frames on a model home, ca.1920-1929 

Instructional exhibit by Frank Wiggins Trade School, showing students and teacher, ca.1920-1929 

Olvera Street, showing a large brick building at left, ca.1940-1949 

Five men looking over a map near a plane, ca.1930 

Exterior view of a large structure with brick walls covered in ivy in most areas, [s.d.] 

Group of three buildings sitting near an unidentified body of water (Los Angeles Aqueduct?), showing large crates in the foreground, ca.1940 

Unidentified factory interior, showing workers adjusting a small slab beneath a large machine, ca.1930 

Men standing on grid layout of a factory, ca.1940 

Men standing near tables in the interior of an unidentified factory, ca.1920 

Students demonstrating carpentry work at the Frank Wiggins Trade School, ca.1920-1929 

Worker applying a tool to a clay-like material, ca.1930 

Orange groves in Southern California, showing a portion of brick wall, ca.1910 

Group of three men constructing a waterways model, showing one man in an elevated box, ca.1925 

Interior view of unidentified factory, showing a single worker standing near the turbines, ca.1935 

Exterior view of the Frank Wiggins Trade School, ca.1920-1929 

Wilson & Company cooler showing butchers quartering beef, ca.1930 

A group of men standing in Swinnerton Campground, near Little Jimmy Springs, ca.1930 

Factory worker applying a tool to a tire, ca.1930 

Two men standing on top of a large model of waterways, ca.1925