Full disclosure: this is NOT the complete deck I bought back in 2012,
as this deck is missing two cards (the Ace and Queen of Diamonds).
Guess I'll get over no longer having a unique bit of game show memorabilia.
http://m.ebay.com/itm/ORIGINAL-GAMBIT-TV-GAME-SHOW-DECK-OF-CARDS-RARE-FIND-TELEVISION-MEMORABILIA-/141844106468?nav=SEARCHThe seller also tells me that according to a former associate at
Heatter-Quigley, the graphic designer of the cards was Art Trugman.
Despite being employed at NBC at the time, H-Q went with Trugman
because they had worked with him before and liked his work.
Trugman died in 2003; according to his obituary in Variety, his
most recognizable work was painting slogans on Goldie Hawn
and Judy Carne on "Laugh-In".