Prof. E.B. Kurtz, head of Electrical Engineering Department, points to a chart during his illustrated talk as part of W9XK's inaugural combined broadcast with radio station WSUI, Jan. 25, 1933.
Prof. E.G. Blackstone of the College of Commerce, giving an illustrated lecture on shorthand, broadcast on W9XK, 1933. Note microphone to pick up sound and photoelectric cells on left to pick up picture.