The earliest published account by Eicholtz or on Eicholtz I have is May, 1945.
I'd be interested in any account prior to that date.
I've not read all the material I have on him lately but cannot find a statement by him claiming to be first to put fiberglass backing on a bow, though I've read numerous claims by others. If anyone has a published account of Eicholtz making that claim I'd appreciate the source.
I do have a claim by him taking credit for plastic facings on bows.
I'd be interested in any source on fiberglass facings prior to 1952.