Alexander (Claude Alexander Conlin). The Life and Mysteries of the Celebrated Dr. ?Q?. Los Angeles, 1921. Signed on the title page ?C. Alexander? and with a 1921 autograph letter signed by Alexander to Worthington tipped-in at front. Several other pieces laid in, comprising: a form letter on lithographed letterhead; 16-page magic booklet; and three newspaper clippings on Alexander. Worthington?s hand-stamped ownership stamps on rear endpapers. Bookplate of Dr. John Henry Grossman. A fine association copy. Alexander?s letter contains interesting content, discussing his and Worthington?s book projects, the discovery of oil on his California property, a brief mention of Harry Kellar?s health, and comments on Poole Brothers? wireless magic props.