Frat meeting in DU house basement on N. Calvert Street

Caption on back reads "In dark, mortar and pestle glow with firefly light"

Close-up of #01485 | Shoulders up

Fireflies in glass jar | Caption on back reads "The light from hundreds of fireflies shines from a vacuum jar at Johns Hopkins, where the insects are used in energy research. As air is removed from the jar, the normally ...

Photograph of a hand holding a firefly above three heaps of fireflies on a table | Caption on back reads "Pressure between fingers separates tails from bodies"

Firefly tails being ground with mortar and pestle | Caption on back reads "Firefly tails are first ground to a fine powder"

Photograph of sign board

Portrait of Hafstad at approximately 45 years old.

Portrait of Boas at approximately 73 years old in his office.

Portrait of Colman at approximately 50 years old.