This vintage booklet titled "The Lumber Calculator" is a rare find for collectors of unique paper items. Copyrighted in 1949, it contains valuable information for those interested in lumber calculations. The booklet was manufactured in the United States and has not been modified in any way. It's a must-have addition to any collection of vintage paper items, especially for those with an interest in woodworking or the history of the lumber industry. This valuable collectible comes in good condition and will make a great addition to your collection.