The Gibson J-45 is—despite Martin’s claim—America’s guitar, the signature instrument of the serious player in jams, gigs, hoedowns, hootenannies, parties, and front porches since the 1940’s. The original J-45 has a slope-shouldered jumbo body (until 1969) with a solid spruce top and mahogany back,...

The Gibson J-45 is—despite Martin’s claim—America’s guitar, the signature instrument of the serious player in jams, gigs, hoedowns, hootenannies, parties, and front porches since the 1940’s. The J-45 has a square-shouldered jumbo body (since 1969) with a solid spruce top and mahogany back, sides,...

According to The Blue Book of Acoustic Guitars, the Gibson B series of acoustic guitars was the direct successor to the LG series largely phased out in the mid-1960s. Generally speaking, the B-15 replaced the LG-0, the B-20 replaced the LG-1, the B-25 replaced the X-braced LG-2, and the larger B-45...