State Highway Patrol and air pollution authorities flag down motorists on Santa Anita Blvd. in El Monte during a statewide checkup on the effectiveness of automobile smog prevention equipment. Photo date: March 5, 1966.
Smog--California--El Monte Air--Pollution--California--El Monte Automobiles--Pollution control devices Automobiles--Inspection--California--El Monte Traffic police--California--El Monte Los Angeles Herald-Examiner photographs Herald-Examiner Collection photographs
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