Testing specimen: Broad view of steel beam in platform labeled with 4806 placard with two men closely examining it. In the foreground, two additional men take notes on clipboards., no date

Testing specimen: Broad view of steel beam in platform labeled with 4806 placard with two men closely examining it. In the foreground, two additional men take notes on clipboards., no date, Item: 3863; Folder: 10.8; Box: 6. 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/74724 Accessed May 19, 2026.