Collection of Blueprints for Protocols and Methods of Operation for the Williamsburgh Power Plant, IRT Subway Station Power Plants, Titled "Instructions High Pot. Testing of Cables HPC -23"
New York City, New York: Various. F. Documents include: 1948 Board of Transportation Power Dept. - Cable Section Test Schedule and Index, (2) folding plates, 1946 revising the 1925, revising 1915 instructions for the Williamsburgh Power Plant Corporation (4) text pages for the testing of High Tension Cables in Case.....