This project was supported in whole or in part by the U.S. Institute of Museum and Library Services under the provisions of the Library Services and Technology Act, administered in California by the State Librarian. Made accessible through a grant from the John Randolph Haynes and Dora Haynes Foundation and Photo Friends.
Photograph caption dated May 12, 1965 reads, "Dr. Harold E. Pearson is chief chemist for the Metropolitan Water District. It is his job to make certain that water from Metropolitan Water District pipelines is pure and clean. One problem is to test for hardness of the water which varies from place to place and day to day. A complete testing unit will be in the filtration plant to be built in the Valley."; See images #00121086 through #00121088 for all photos in this series.
Type
image
Format
1 photographic print :b&w ;21 x 26 cm. Photographic prints
Laboratories--California--Los Angeles Men--California--Los Angeles Chemists--California--Los Angeles Water--California--Los Angeles Water--Hardness--California--Los Angeles Water quality--California--Los Angeles Water-supply--California, Southern Test tubes Water bottles--California--Los Angeles Sinks (Plumbing fixtures)--California--Los Angeles Faucets--California--Los Angeles Wiping cloths--California--Los Angeles Interiors--California--Los Angeles Metropolitan Water District of Southern California (Calif.) Metropolitan Water District of Southern California (Calif.)--Employees Valley Times Collection photographs
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