This folder contains correspondence and other documents pertaining to the purchase, operation, and disposition of equipment and supplies for the West Orange laboratory and other Edison concerns. Among the documents for 1915 are items relating to spray and sprinkler technologies and steam-heated air dryers. The correspondents include longtime Edison associates Frederick M. Kimball of General Electric and Frederick A. Scheffler of Babcock & Wilcox. Some of the incoming letters were referred by Edison to William H. Mason, chief engineer of the phenol plant at Silver Lake, New Jersey, who also played a supervisory role at Edison's benzol absorbing plants in Johnstown, Pennsylvania, and Woodward, Alabama.
Less than 10 percent of the documents have been selected. The unselected material consists primarily of unsolicited correspondence from vendors and suppliers and routine documents concerning the settlement of accounts. Courtesy of Thomas Edison National Historical Park.