I am fairly certain this was a giveaway in the 1950's. When you got gas you got the album and a booklet of stamps and probably received a booklet each time you bought gas. There were 5 booklets of stamps to stick in the album and with this album is the cover from all five packets of stickers or stamps. Photo number 2 shows them. They are all inserted in the stamp album. The album is in very nice condition. The staples in the binding are secure and not rusty. It measures about 6 3/4 inches x 5 3/4 inches. The pages are not numbered. Each stamp was a car stamp and the legend beneath where the stamp goes is a little blurb about the car. Very nice collectible for Sinclair Oil Company. It does not smell musty and has been in a smoke free environment. We must collect 6% Pennsylvania Sales and Use Tax at checkout. Thanks for stopping by!