Pickets blocking the entrance to Gate #3 at the Twin Cities Army Ammunition Plant (TCAAP). Photograph by E. K. Okamoto, August 24, 1967. Twin Cities Army Ammunition Plant files, box 143.E.17.3B. Manuscripts Collection, Minnesota Historical Society, St. Paul.

Picket line at the Twin Cities Army Ammunition Plant (TCAAP) blocking Gate #4. Photograph by H. W. Holmberg, August 8, 1967. Twin Cities Army Ammunition Plant files, box 143.E.17.3B.

Employee meeting during a visit from General Colby, Twin Cities Arsenal, August 1, 1957. Twin Cities Army Ammunition Plant files, box 143.E.17.2F. Manuscripts Collection, Minnesota Historical Society, St. Paul.

Twin Cities Arsenal employees with safety award, 1950s. Twin Cities Army Ammunition Plant files, box 143.E.17.3B. Manuscripts Collection, Minnesota Historical Society, St. Paul.

Workers outside the Twin Cities Ordnance Plant, 1950s. Twin Cities Army Ammunition Plant files, box 143.E.17.2F. Manuscripts Collection, Minnesota Historical Society, St. Paul.

Window display for Twin Cities Arsenal and Federal Cartridge Corporation, 1950s. Twin Cities Army Ammunition Plant files, box 143.E.17.2F. Manuscripts Collection, Minnesota Historical Society, St. Paul.

Soldiers marching with Twin Cities Ordnance Plant flag, 1940s. Twin Cities Army Ammunition Plant files, box 143.E.17.3B. Manuscripts Collection, Minnesota Historical Society, St. Paul.

Ammunition inspection, Twin Cities Ordnance Plant, 1940s. Twin Cities Army Ammunition Plant files, box 143.E.17.2F. Manuscripts Collection, Minnesota Historical Society, St. Paul.

Workers on the factory line, Twin Cities Ordnance Plant, 1940s. Twin Cities Army Ammunition Plant files, box 143.E.17.2F. Manuscripts Collection, Minnesota Historical Society, St. Paul.

Employees of the Twin Cities Ordnance Plant, featured in the inaugural issue of Twin Cities Ordnance News, May 20, 1942. Left to Right: Mariano G. Carbonell, Katherine Egan, Lt. Dan E. Andrew, Margaret Lazenberry, B. Roberts, Mrs. Audre Jensen, John Jurgens, Howard Moo. Twin Cities Army Ammunition Plant files, box 143.E.17.2F. Manuscripts Collection, Minnesota Historical Society, St. Paul.