Source: Aquila Books, Calgary, Alb., Canada | Brigham Young University, Harold B. Lee Library, Provo, Utah | University of California, Mark Twain Papers, The Bancroft Library, Berkeley
([UPB CU-MARK])
Cue: "I have a cablegram from Webster & Co saying "Send"
Source format: "MS (for the letter) | MS (for the letter) | MS (for the envelope)"