Last April, we had a brief discussion here and also here about the origin of the oft-bootlegged office poster with the laughing guys asking, "You want it WHEN?" A consensus emerged that it was the work of cartoonist Henry Syverson and that it probably derived from the laughing characters he drew for years, chuckling atop the cartoon page in each issue of The Saturday Evening Post. Well, Russ Maheras has just sent me the above scan from the March 29, 1958 issue. The heading is credited to Mr. Syverson so for me, that pretty much proves it. Thanks, Russ.