These are from the Anonymous 1951 Mini Hockey Set. These cards were in strips of 13 cards that were sold in vending machines in little plastic cases that you used to see with toys back in the 60's and 70's.
Even though these were sold in 1951, the pictures were of players from the 30's and 40's.
I remember reading about this set, but I confirmed this in the Vintage Hockey Collector.
I can't tell you about the value, but they usually show up in rough shape. I believe that they are popular when you can find them in higher grade.