America's entrance into World War II and the unprecedented domestic mobilisation effort that followed profoundly altered US society. Women not only entered the workforce en mass, they routinely worked in roles traditionally reserved for their male counterparts.
Alfred T Palmer, a photographer for the US Office of War Information, captured this societal sea change 35mm at a time -- these are some of his most captivating portraits.
Woman working servicing an aeroplane engine at North American Aviation, Inc.
Female factory workers assembling an aircraft.
An Army mechanic servicing a truck's air filter at Fort Knox
An engineering team from Fort Story survey a bombardment site ahead of naval target practice.
Servicing the A20 may not be as exciting as flying one but it's no less vital a role.
A Marine truck driver in New River, NC.