Lunar eclipse with inscription on back, "With E. F. Pigot's kindest regards to Mr. Ellerman, 1922 Oct. 11." Pigot is Edward Francis Pigot, S.J., 1858-1929. Ellerman is Ferdinand Ellerman, 1869-1940. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
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