Assistant to Alexander Graham Bell, he was the recipient of the first telephone message: “Mr. Watson, come here, I want you.” TLS, one page, 8.5 x 9.75, Boston letterhead, May 31, 1924. A letter to Mr. Longley. In full: “I shall return from New Haven June 4th. Someone has kindly sent me a copy of a Salem paper that gives me the program for the 5th. Please write me so I will get it on my return from New Haven, whether in your judgment evening clothes will be most suitable for the occasion.” Watson has added the “for the occasion” in his own hand. Letter folds, with one horizontal fold through a letter of the signature, a few light creases and edge toning, heavier at the top margin, otherwise fine condition. R&R COA.