Hudson Forge, that I know of, was located in Hudson Falls, NY. I have found several Hudson Forge wrenches over the years including a DOE wrench and two wooden-handled adjustable pipe wrenches. In the case of one of the pipe wrenches, the Hudson Forge mark was found on the part of the shaft covered by the wooden handle. Clearly, this wrench was made for someone else. The other pipe wrench, pictured below, is a 10-inch Stillson with a black-painted wooden handle. The stamp on this wrench reads, in 3 lines: "STILLSON WRENCH, HUDSON FORGE COMPANY, MADE IN U.S.A." It seems this wrench was made to sell as a Hudson Forge-branded wrench.