Shelby White and Leon Levy Archives Center, Institute for Advanced Study, Princeton, NJ, USA
Photograph collection - Einstein-- EB Series-barn collection\8-EB PHOTOS with A.E.-5-6 inch (1 of 2-dated)
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Albert Einstein (left) with his assistant, Walter Mayer (center), and Charles Edward St. John (right) in Pasadena, California. Charles Edward St. John was an astronomer who was on the staff of the Mt. Wilson Observatory. This photograph was likely taken during a visit by Einstein to the Observatory.