Candid photograph of seven boys with a caption that reads "Lightning-bug project--kids bringing in the bugs."

Candid photograph of four boys with nets walking down the steps to catch fireflies.

Candid photograph of a man emptying lightning bugs into a bottle while a boy looks on, holding the bottle. The photograph has a caption on the back that reads "With help of researcher he empties bugs into bottle for counting."

Candid photograph of a girl chasing fireflies in a grassy, wooded area. The photograph has a caption that reads "From behind a tree, Mary spies another flash. She creeps upon it carefully."

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

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 intermittent flashing of the bugs."

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

Summer Session students walking in front of Gilman Hall.