Test specimens: view of six samples in two tiers of three each; top tier labelled "-140 F" lower tier labelled "Room Temp"; labels at each of three samples across bottom row read "machined" "sheared" and "flame cut", 1951

Test specimens: view of six samples in two tiers of three each; top tier labelled "-140 F" lower tier labelled "Room Temp"; labels at each of three samples across bottom row read "machined" "sheared" and "flame cut", 1951, Item: 555; Folder: 28.16; Box: 1. Negatives and Photographs of Fritz Engineering Laboratory Tests and Events, SC Photo 0013. Lehigh University Grant Projects. https://archivesspace.lib.lehigh.edu//repositories/7/archival_objects/70960 Accessed May 20, 2026.