The three Mayer brothers standing outside the Oscar Mayer Dome, Palomar Observatory, at the dedication of the 60-inch telescope. The man in the center is Oscar G. Mayer Jr. The dedication plaque is seen between the men, against the building's exterior wall. The men are wearing suits, neckties and coats. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
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