Not quite the answer, but here's one for 109 in this image. Doesn't
tel us the price of bulk pro tape... but interesting!
On Mar 20, 2010, at 3:49 PM, Claude Zachary wrote:
> Thanks to the Proquest Historic Newspaper Database, I found an ad
> in the Nov. 13, 1949 NY Times for the Soundmirror Tape Recorder
> selling for $199.50 with microphone that "records for 1/2 hour."
> It was being sold by G. Schirmer stores in NYC and Brooklyn.