
Source: Where I'm Calling From: New and Selected Stories
1860s, Speech in Independence Hall (1861)
Source: Where I'm Calling From: New and Selected Stories
1870s, Speech before the Pole-Bearers Association (1875)
Interview on The Art Of Collecting by Sky Arts - Professor Nasser David Khalili episode (February 21, 2018) https://vimeo.com/256957904
[John Sears, RTNDA Communicator, RTNDA; The Association; Radio Television Digital News Association; Volume 54, August 2000, Interview with Ed Bradley]