This is a Sub Envelope w/ Black White Photo from the Electric Boat Company. It features the US Submarine Grouper. Please see my photos for a better idea of the state of the item. Please let me know if you have any questions or want more pictures! The USS Grouper (SS-214) was a Gato-class submarine of the U.S. Navy that served with distinction during World War II. Commissioned in February 1942, Grouper conducted ten war patrols in the Pacific, sinking or damaging several Japanese ships, including transports and freighters, and performing reconnaissance and rescue missions. One of its most notable contributions was the rescue of downed U.S. airmen?part of the "lifeguard" duty submarines performed to support Allied air operations. After the war, Grouper was converted into a radar picket submarine (SSR-214) and later into an experimental submarine (AGSS-214) for research and development purposes. She remained active in various roles until being decommissioned in 1968 and was eventually sold for scrap, having served for over two decades in both combat and innovation. The Electric Boat Company, founded in 1899 by Isaac Rice, is a pioneering American shipbuilding firm best known for its role in developing submarines for the United States Navy. Originally partnering with inventor John Philip Holland, the company built the Navy?s first commissioned submarine, the USS Holland (SS-1). Based in Groton, Connecticut, Electric Boat played a critical role in advancing submarine technology throughout the 20th century, from early diesel-powered designs to modern nuclear-powered vessels. Now a division of General Dynamics, it continues to be a leading builder of submarines, including the current Virginia-class and upcoming Columbia-class ballistic missile submarines.