Vintage Canasta Cards
Gene Gable, a contributing editor for creativepro.com, was fortunate enough to purchase a box of over 1,000 vintage ('40s and '50s) playing cards from a garage sale, which included over 30 different examples of Canasta card decks.
In his article, Heavy Metal Madness: It's All in the Cards, Gene displays a few of the beautiful Canasta designs he stumbled upon.
Personally, I only own one vintage Canasta deck (example on the right), which I picked up at an antique store, if I recall.
I'll keep an eye out for more, as I think this would be an interesting collection. If I get enough of them together I'll post them here at Rummy-Games.com. If you have any Canasta decks you'd like to contribute, please just scan the card back and send me the image. (Use the "Contact Us" link at the bottom of the page to send me a message.)