Exterior view of the Mount Palomar Observatory in San Diego County, ca.1935 

Walnut grove in Whittier, California, [s.d.] 

Santa Fe Railway's "La Grande" station, Los Angeles, ca. 1911 

View of 6th Street looking west from Spring Street, [s.d.] 

Exterior view of Mount Wilson Observatory with a crowd gathered, ca.1930 

Drawing by R. W. Porter depicting an interior view of Mount Palomar Observatory showing the 200-inch telescope, looking north, 1938 

Exterior view of Mount Wilson Observatory, ca.1930-1940 

Exterior view of Mount Wilson Observatory, ca.1930-1940 

Drawing by R.W. Porter depicting an interior view of Palomar Observatory and a cross-sectional view of the vacuum aluminizing chamber of the 200-inch telescope, 1940 

Drawing by R.W. Porter showing an astronomer seated at the prime focus of Mount Palomar Observatory's 200-inch telescope, 1940 

Drawing by R. W. Porter depicting an interior view of Mount Palomar Observatory showing a 48-inch telescope, 1939 

Drawing by R. W. Porter depicting an interior view of Mount Palomar Observatory and a cross-sectional view of the 200-inch telescope, with parts labelled, 1938 

Aerial view of Mount Wilson Observatory, ca.1930-1940 

Drawing by R. W. Porter depicting an interior view of Mount Palomar Observatory and a cross-sectional view of the 200-inch telescope, 1938 

Hans Anderson Festival in Elysian Park, May 14, 1917 

Groundbreaking ceremony for the State Office Building on First Street, ca.1925 

Painting by J.P. Robertson, showing Mission Santa Barbara and people in the community, [s.d.] 

Church of the Angels, Gavanza, showing the landscaping in the foreground, ca.1880-1940 

Church of the Angels, Garvanza, showing a statue, ca.1880-1940 

Church of the Angels, Garvanza, shown through the trees, ca.1880-1940 

View of 6th Street looking west from Spring Street, ca.1910 

Church of the Angels, 1110 North Avenue 64, Garvanza, ca.1880-1940. 

A walnut grove of J.D. Durfee, El Monte(?), California, ca.1910 

Walnut orchard at the ranch of J.D. Durfee, El Monte(?), California, ca.1910 

Exterior view of the Olympic Auditorium, January, 1930