This folder consists primarily of agreements relating to the license and use of Edison's rock crushing technology and to the development of compressed air technology. Included are documents pertaining to the formation of the Edison-Saunders Compressed Air Co. and to the activities of Edison Ore Milling Syndicate, Ltd., and several non-Edison limestone and quarry companies. The documents are from envelopes 77, 101, 106, 107, and 210.