Hardbound edition of Christian Science by Mark Twain, signed by Twain on the interior front cover. Published by Harper & Brothers Publishers, New York, 1907. Twain has scripted his name in black fountain pen (grading 7/10) upon an affixed bookplate of a former owner. Mark Twain was the pen name of Samuel Langhorne Clemens (1835-1910), famed American writer, humorist, and essayist. Since this book was published in 1907, it was signed by Twain just shortly before his death on April 21, 1910. The 362-page book, which has no dust jacket, displays light wear to the boards, with slight separation along the spine. A typed name label from a different owner is affixed to one of the interior pages. Excellent condition overall. Full LOA from PSA.