The title says it all.  Each measuring a little under 2 inches each side.  The Bruno Betzel card references him as the Toronto Maple Leafs coach, so it should be a 1956 issue. The card stock has the look and feel of Hocus Focus cards, but are likely a Canadian issue (there is a Canadian mailing address on the back).  Someone wrote “V361” or “V367” on the back of one of the cards.  Does anyone have any more info?   I am stumped on these.  
Thanks!
https://imgur.com/gallery/VUuIO2Q
I figured it out!  Sorry, I didn’t think to google the address on the back of the card.  It linked it to Parkhurst, which led me to Wikipedia (of all places) which mentioned there was a photo magic set issued.  I googled the photo magic set and there it was!