https://www.crazycrow.com/18th-and-19th-century-personal-gear/canvas-haversack-3-button-flap-14x14in/
Canvas Haversack Three Button Flap 14"x14"
4524-501-003$23.50
Product Details
Our Three Button Flap Canvas Haversacks (14"x14" with single shoulder strap) were commonly used by both civilians and soldiers throughout most of the 18th and early 19th century. They can be used with either colonial longhunters or early fur trade, French & Indian War, Revolutionary War or War of 1812 reenactments. These haversacks are made from sturdy canvas and offered in a few sizes and styles (see related items below). All styles have a nice muslin inner lining. This lining is held in by corner buttons, allowing the liner to be easily removed if desired.