paperback – Page 52

1952 Bantam reissue – cover art by Barye Phillips

1952; cover art by Barye Phillips

better image than previously posted

cover art by Robert Bonfils

1948 McKay release in the US, this the later McFadden softcover

released in Australia as Invincible, as by Edward Ronns

cover art by Jerry Podwil

1950 Gold Medal paperback original

cover art by C.C.Beall

better image than previously posted

better image than previously posted

November 1967 Adult Books paperback original

cover art by Robert Bonfils

pseudonym of Lawrence Lariar

1959 Signet paperback original

cover art by Robert Schulz

pseudonym of Lawrence Block

reissued in Jan. 2008 by Hard Case Crime as A Diet of Treacle

cover art by Chuck Pyle

1940 Farrar & Rinehart hardcover

cover art by Darcy (Ernest Chiriacka)

8th in the Nero Wolfe and Archie Goodwin series