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Adams Walter Sydney C1 Adams, Jeans and Hubble at Mount Wilson Observatory	Curtis Heber F1 Curtis with Crossley Reflector	Goldberg Leo B4 Goldberg Attends IAU Meeting	Greenewalt Crawford B1 Greenewalt at Las Campanas Observatory	Hale George A7
Hale George B3 George Hale	Hale George C4 Hale and Ellerman at Mount Wilson	Hale George G2 Hale at Yerkes	Kamen Martin C1 Martin Kamen (left) and Harold Urey (right) conversing	Langley Samuel F2 Samuel Langley with 5-inch equatorial telescope
Aitken Robert F1 Aitken Looking through Telescope	Aitken Robert G1 Aitken's Children on Mt. Hamilton	Aitken Robert G2 Aitken Child in Hammock	Aitken Robert H2 Children Playing behind Lick Observatory	Aitken Robert H3 Children behind Lick Observatory
Aitken Robert H4 Children Playing behind Lick Observatory	Bok Bart F2 Bok with Telescope	Campbell William B1 Campbell with 36-inch Refractor	AAS E10	Berkner Lloyd C1 Berkner and Waterman Sign Contract