Here is another new addition to my collection. Featured here is the complete twelve picture set of the 1955/56 Brooklyn Dodgers Photo Pack. Measuring 5" x 7", blank backed and printed on white glossy paper stock, these photos were sold at Ebbets Field concession stands (possibly by mail order, as well). They appear to have been manufactured by an outfit called Jay Publishing (some collectors disagree with this) and were originally sold in a paper envelope with the words "Twelve WORLD CHAMPION Dodgers PHOTOS" printed in blue.
There is some uncertainty regarding the exact year of issue. Standard Catalogs from different years by Krause publications indicates that they are from the 1955 season or the 1956 season - depending on what year catalog you have.