This letter to Olivia Langdon, written 7 January 1869 from a stop in Chicago on his 1868-1869 lecture tour, shows how MT typically signed himself when writing to Livy before their engagement became formal. He did not use the name "Saml. L. C." with other correspondents. According to Victor Fischer and Michael B. Frank, who edited the letter for the Mark Twain Project, the young woman whose letter he enclosed was Louisa (Lou) Conrad; the letter itself does not survive.
This page appears here with permission of the Mark Twain Papers, UC Berkeley. To see the entire letter, with annotations by the Project, use the link below right, and search for MS: CU-MARK, UCCL 00224.TRANSCRIPT OF THIS PAGE | MARK TWAIN PROJECT