No idea of the dates involved but I suspect it’s a treasure trove.
ACETATE [Listing ID: A119143]
Available in Bellingham, WA:
We have the complete broadcast history of IGM, the first syndicator of broadcast content for radio stations nationwide. Over 90 boxes, with 4-6 reels each, of reel to reel tape made of actetate.CONTACT: Frank Ordway, American Museum of Radio and Electricity.
Phone: 360-738-3886
frank@amre.us