This notebook contains notes and drawings on telegraph and battery experiments. All are by Charles Batchelor except for one page by Edison. The first page is dated Sunday, September 7 (probably 1873); the only other dated entry is for March 18. On the last page is a description, signed by Batchelor, of a visit by an unnamed person. The front cover is marked "Experiments" in ink, with "Batch" written in pencil underneath. Thirteen pages of this unnumbered book have been used.
Courtesy of Thomas Edison National Historical Park.