The largest card, the pink one on the top row, measures 4 7/8” x 5 3/4”.  The smallest card, picture #18, measures 2 7/8” x 2 1/2”.  There are 2 cards that have duplicates and the card in picture #11 has a missing back.  These come from a smoke free home and I combine shipping on multiple purchases if you email me before you pay. Thanks for shopping!