These documents, which cover the years 1864-1919, relate to the career of Joseph Casho, a mechanical engineer who became superintendent of operations at the Pearl Street central station in New York City in August 1882. Included are a printed engineer's certificate from 1864, an 1883 note from Edison introducing London investor Dillwyn Parrish, and a letter about Casho's 1905 elevator patent. Also included is an invitation to an Edison Pioneers function at Llewellyn Park in 1919 to meet Charles Edison and his new wife, Carolyn Hawkins Edison.
[X001J7A], Honorary Certificate, Joseph Casho, April 25th, 1864 1864-04-25
[X001J7B], Letter from Charles Lorenzo Clarke to Joseph Casho, August 9th, 1882 1882-08-09
[X001J7C], Letter from Thomas Alva Edison to Joseph Casho, April 20th, 1883 1883-04-20
[X001J7D], Letter from Edison Electric Illuminating Co (New York), Richard Rogers Bowker to Joseph Casho, March 1st, 1893 1893-03-01
[X001J7E], Letter from Edwin S Clarkson to Joseph Casho, May 3rd, 1905 1905-05-03
[X001J7F], Invitation from Mina Miller (Mrs Thomas A.) Edison, Thomas Alva Edison, January 1st, 1919 1919-01-01