10/17/1893 Dickson, William Kennedy Laurie to Edison, Thomas Alva
(Heise, William [supplied or conjectured]) Tools and machinery; Peephole Kinetoscope [Document Within a Document]
[VC93]  Vouchers and Attached Correspondence Series: Vouchers & Attached Correspondence (1893)
[VC93054B; TAEM 160:370]
Courtesy of Thomas Edison National Historical Park.