This photo 'Shipyard workers at Portsmouth Naval Shipyard' by Jim Cleveland is in the Public Domain.
HF 5381-5386
Vocational guidance. Career development
VC 412-426
Navy yards and stations. Shore facilities.
TK 1-9971
Electrical engineering. Electronics. Nuclear engineering.
VM 1-989
Naval architecture. Shipbuilding. Marine engineering.
TS 200-770
Metal manufactures. Metalworking.
VM 298.5.-301
Shipbuilding industry. Shipyards.
VC 10-580
Naval maintenance