The Wollensak brand was used by the 3M corporation for a series of

Vintage 1960's Wollensak 3M T-1580 Stereo Twin-Amp Magnetic Reel

Remembering Jimmy Rea Electronics - Advent Digitizing

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Wollensak hi-res stock photography and images - Alamy

Retro Thing: 3M Wollensak T-1500 Reel To Reel

Urban Auctions - VINTAGE WOLLENSAK 3M 8075 8 TRACK PLAYER

3m Story, PDF, Innovation

Wollensak Tape Recorders

Wish I had a camera to test this…88mm F1.4 Wollensak lens for

Wollensak Timeline – Alphax Betax Shutter Services