Ephemera: Swiss Family Gibson-son (1930s)

Aside from the offensive blackface I've wiped from the image, this shot is pretty wild. Everyone playing fretted stuff is playing a Gibson instrument and I spy an L-30 archtop, ES-150 electric archtop, what appears to be an LG-2, another L-30, an A-50 mandolin (I think), and a tenor banjo I can't place. The early electric Gibson is pretty hip, I must say!