He published "In Memoriam"--his poem commemorating Susy Clemens--as "SLC." -----Original Message----- From: Mark Twain Forum [mailto:[log in to unmask]] On Behalf Of Ladd, Barbara Sent: Sunday, October 03, 2010 3:46 PM To: [log in to unmask] Subject: Query: Did Mark Twain publish as "Samuel Langhorne Clemens"? I am trying to find out whether Mark Twain ever published as "Samuel Langho= rne Clemens," "Samuel L. Clemens," or "Samuel" or "Sam Clemens" AFTER the f= amous Feb. 1863 first use of "Mark Twain." Until this afternoon, when I hap= pened to check on it, I thought he published "In Defense of Harriet Shelley= " (in North American Review, 1894) under "Samuel Langhorne Clemens," but he= did not--he published that essay under "Mark Twain." If anyone knows whether there is a source for this information, please let = me know. I've checked Rasmussen, and a few other sources. Many thanks Barbara