[X-ray of tokens]
Photograph
[X-ray of tokens]
February 22, 1890
Gelatin silver print, printed later
Image: 2 15/16 × 3 5/8 in. (7.5 × 9.2 cm)
Gift of the 3M Foundation, ex-collection Louis Walton Sipley, 1977
1994.0413.0001
Inscriptions Inscribed in ink on verso, (William Jennings' hand): First X Ray print made by \ Dr. Arthur W. Goodspeed and W.N. Jennings \ at the University of Pennsylvania \ in 1890 - Roentgen announced \ his discovery of X Rays in 1895
