[Yerkes Observatory, Wisconsin.] Original group photograph, including the astronomers Alice Hall Farnsworth, Otto Struve and Nicholas Bobrovnikoff, and staff including 'computers'. With caption by the astronomer Mary Proctor.

6 x 8 cm black and white photograph. In fair condition, lightly faded, with crease to one corner. Proctor's caption, in pencil on the reverse, reads; 'A group at Yerkes Obsy, Dec. 10, 1925. | Left to right | Otto Struve (Dr.) | N. T. Bobrovnikoff (student) | E. Zabler (janitor) | Mis Elizabeth Struve (Computer) | Alice Farnsworth (Dr); Margrethe Jorgensen (Computer) | Mrs. Sullivan (asst. in photo. dept.) | Mrs. Lee (Office Secretary) | Lela Cable (Computer) | This photo was made on a day when Messrs. Frost, Barrett, Lee, Van Biesbroeck & Ross were all absent some of them at the faculty dinner at the Univ. of Chicago.'