The printed feedsack idea blossomed during the Depression, and lasted through the fabric shortages during World War II and beyond. Frugal living doesn't go out of style! The Quilt History website has an overview of feedsack history. Another article has loads of resources and some great vintage photos. This article has some entertaining vintage ads from companies proud of selling their wares in such useful bags.
These fabrics are guaranteed to bring a smile to even the grumpiest of days!
(See lots more feedsack fabrics in the following post!)