This is a Willow Run Assembly Plant Canvas Bag. The Willow Run Assembly Plant is a General Motors automobile assembly building famous for manufacturing B24 bombers during World War II. This bag dates from 1964-1970 (from the symbol for Cadillac on the bag, which was only used during that time). The symbols on the front of the bag, from left to right, are Buick, Oldsmobile, and Cadillac. This sturdy canvas bag measure 12" high, 11-3/4" wide, and 4" deep. It has a plactic liner with no tears in it. This would be a great bag for carrying heavy objects such as tools with a great tie-in to history.