Mastertone System for Steel Guitar

VGC, published by Gibson, Inc., here is a great collection of 51 examples of sheet music for steel guitar from the Gibson Company, with various color covers, each with a photo of a player or group with great old Gibson steel guitars and other vintage instruments. Very cool, and we've never seen so many of these in one place before. Copyright dates 1939 and 1940. At least one duplicate sheet, one back cover half missing, generally real nice condition on all. price reduced