Historic Engineering Blueprints

Detailed engineering blueprints showcasing hydraulic systems, excavators, and special tractors used in maritime and land construction projects from the 19th and early 20th centuries.

Image shows a Model of 1917 Six Ton Special Tractor, a small tank used during World War One. This photograph was taken on September 18, 1918, and is marked "Not for Publication" and "For Official Use Only." The image includes various technical details about the tractor's design and components.
Image shows a Model of 1917 Six Ton Special Tractor, a small tank used during World War One. This photograph was taken on September 18, 1918, and is marked "Not for Publication" and "For Official Use Only." The image includes various technical details about the tractor's design and components.