Walter E. Holland, Chief Engineer of Philco, The Literary Digest for April 13, 1929
From the Ron Ramirez Collection
scanned by Bob Coraor(klondike98)RR0196 1929 RCA Radiotron Tube Ad by Philco's Walter Holland
Walter E. Holland, Chief Engineer of Philco, The Literary Digest for April 13, 1929
From the Ron Ramirez Collection
scanned by Bob Coraor(klondike98)RR0196 1929 RCA Radiotron Tube Ad by Philco's Walter Holland