This folder contains correspondence and other documents relating to the commercial and technical development of Edison's alkaline storage battery and its use in lightweight electric delivery wagons. Included is a draft letter from Edison to The Carriage and Wagon Builder, dated November 25, 1911, summarizing his work, as well as references to other articles by or about Edison. There are also letters, some with draft replies in the form of marginalia, pertaining to endurance tests and to Edison's control of the Lansden Co., a manufacturer of electric wagons. Other documents include an expense statement detailing experimental work conducted during the period August 1910-March 1911 and a drawing of a wood block wheel, probably by Edison, dated November 6, 1911. Among the correspondents are W. M. Barrett, president of the Adams Express Co.; phonograph dealer C. B. Haynes; longtime Edison friend and associate Cornelius E. Nestor; and W. Lanier Washington, whose grandfather had been a student of Samuel F. B. Morse.

Approximately 60 percent of the documents have been selected. The documents not selected relate to the procurement of supplies and other routine matters.