This folder contains correspondence about cement and cement products in general, as well as about Edison's cement business. Among the items for 1918 is a letter introducing Raymond A. Wetzler, New York district sales manager of the Edison Portland Cement Co., to General Electric president Edwin W. Rice. Also included is a letter from Thomas H. Low soliciting Edison's opinion about the use of concrete for the construction of barges, along with the inventor's response.
Approximately 25 percent of the documents have been selected. The unselected items consist of letters that did not receive a substantive reply, as well as those not pertaining to Edison personally. Courtesy of Thomas Edison National Historical Park.