3 photographs of ZMC-2 dirigibles. From left to right: crowd views tethered dirigible; dirigible in flight; man wearing hat standing next to motorcycle watches dirigible. On side of each dirigible: "U.S. Navy ZMC-2." The ZMC-2 dirigible was built at Grosse Ile NAS from 1926-1929. Handwritten on front: "Grosse Ile, built 1929."