This folder contains correspondence and other documents relating to the work of the Standard Construction Corp., Ltd. Most of the letters are to or from Edison and William Simpkin, chief engineer. Included are numerous drafts in Edison's hand. The documents deal mainly with the design and construction of the Dunderland works and operations at the Edison Portland Cement Co. in Stewartsville, New Jersey. Several documents pertain to briquetting, including reports by Simpkin and Professor Henry Louis. Also included are references to Edison's meetings with Simpkin in Florida. Some of the letters are accompanied by drawings.

More than 90 percent of the documents have been selected.