Economy pump, Southern California, 1932 [image]
Pumps and St. Vincents Church, West Adams Boulevard and South Figueroa Street, Los Angeles, CA, 1934 [image 5]
Pump valve, Southern California, 1931 [image]
Catalogue, Layne & Bowler Pumps, Southern California, 1931 [image]
Pumps and St. Vincents Church, West Adams Boulevard and South Figueroa Street, Los Angeles, CA, 1934 [image 6]
Decalcomania on 76 pumps, Southern California, 1933 [image 1]
Decalcomania on 76 pumps, Southern California, 1933 [image 2]
Charge separation in transition metal and quantum dot systems
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Niagara Falls, Pomona Pump, Southern California, 1930 [image]
Leaky hub & water pump, Southern California, 1932 [image 1]
Axelson grooved-seal insert pump, Southern California, 1933 [image]
Filling car with 'Volatile Vapor', streamers from pump to sky, Southern California, 1931 [image]
County Hospital, Mark Pump Co., Los Angeles, CA, 1931 [image 4]
County Hospital, Mark Pump Co., Los Angeles, CA, 1931 [image 1]
County Hospital, Mark Pump Co., Los Angeles, CA, 1931 [image 2]
Pumping plant panel board, Southern California, 1931 [image 2]
Pumping plant panel board, Southern California, 1931 [image 1]
County Hospital, Mark Pump Co., Los Angeles, CA, 1931 [image 3]
Pump valves and sucker rod couplings, Axelson, Southern California, 1931 [image 1]
Installations at County Hospital, Mark Pump Co., Los Angeles, CA, 1930 [image 4]
Installations at County Hospital, Mark Pump Co., Los Angeles, CA, 1930 [image 3]
Installations at County Hospital, Mark Pump Co., Los Angeles, CA, 1930 [image 1]
Pumping plant switchboard and metal clips, Southern California, 1931 [image]
Installations at County Hospital, Mark Pump Co., Los Angeles, CA, 1930 [image 2]
Pumps, etc. for bulletin cover, Southern California, 1931 [image 4]
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