PAPA

(1) A Hoax

from Fancyclopedia 2 ca. 1959
The Pornographic Amateur Press Association, intermittently suggested as a medium for publishers of bawdy material. It is generally represented as sending its mailings by Railway Express to get around Postal regulations about sending obscene matter thru the mails [there's a law against obscenity in Expressed matter, too, but apparently Railway Express has no right to open packages], charging dues of $5 per mailing, etc. More your Sam: Johnson knoweth not, tho people have at times referred to the anthology of bawdy poetry collected by one of our Midwest fans as being, or being culled from, PAPA mailings. The thing in at least one form was a hoax perpetrated by 7th Fandom, led by Norm Browne in DAMN!; a series of burlesque reviews of imaginary mailings were the total results.

from Fancyclopedia 2 Supplement ca. 1960:
The real Pornographic Amateur Press Association — one of them, at least — was a round-robin sort of thing, sent around by First Class Mail. It was lost in the hands of Cliff Gould.

(2) Protean APA

An abbreviation for the Protean APA, which see.