VGC (small 1/2" x 1/4" tear off of blue backround on front cover), sheet music, part of the Gibson "Mastertone System for Steel Guitar" series, copyright 1939, showing the Eastman trio on the front cover playing an L-5, steel guitar, standup bass, with amp, on the back cover is a pitch "YOU Can Play the STeel Guitar" with 6 more photos of various players and groups