[The following documents were discovered after the microfilm edition of Thomas A. Edison Papers, Part I (1850-1878) was published and were initially published in the Supplement Series in the microfilm edition of Thomas A. Edison Papers, Part III (1887-1898). To see the location of this item in the Series Notes for Part I, use the "Which Series Notes?" button.]

This folder contains patent tracings signed by Edison and James Adams pertaining to the sextuplex telegraph, along with other tracings signed by Edison and Charles Batchelor relating to the telephone.