Two signed William Tenn books picked up from different venues:
Klass, Philip. The Evolution of William Tenn, or Myself When Young. The Pretentious Press, 1995. First edition chapbook original (at 11″ x 6″, an unusually tall chapbook), one of 85 copies, a Fine copy, signed by Klass, with a photo of the author tipped in on the back of the title page. Includes several short pieces published by the The Apprentice, published by NYU when Klass was a 19-year old student in 1939. Bought from a fellow SF dealer for $36.
Tenn, William (writing name for Philip J. Klass). Immodest Proposals. NESFA Press, 2001. First edition hardback, a Very Good- copy with a large coffee-colored stain at head (and a smaller one at heel) in a Very Good+ dust jacket, with wrinkling to spine and front cover and spots of staining to blind side of the dust jacket. Signed by Tenn: “P. Klass/W Tenn”. Not a great copy, but bought for $5.99 at Half Price Books. Supplements a Fine/Fine (but unsigned) copy.