Highly-detailed reprint of the 1920 Gibson banjo flyer (catalog) detailing the features of the banjo models produced by Gibson at the time. Includes a detailed explanation of the mechanical attributes of the early ball-bearing (without springs) tone chamber and Pyralin (celluloid) resonator design. 10-page flyer, page size is 6˝x9˝, overall unfolded size is 9˝x30˝. From the Pickin' Magazine archives. A wonderful historical piece on Gibson Banjos. Very limited supply.