Mabel Hiltwein

Beatrice Foreman

Beatrice Foreman was a laboratory technician in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

E. S. Ryan, Jr.

E. S. Ryan, Jr. worked for the Poe Piping & Heating Company.

J. E. Crawford

J. E. Crawford worked for the Midwest Piping and Supply Company.

Frank Avery