There is another Jack Taylor tandem on Ebay, though this one is seventies, at the following:
I quote from the auction: "On the original receipts from the Taylor brothers you can see the original owner, the specs of the frame, and how it was supplied. Also included in the documentation is the original receipt from the Cupertino Bike Shop, handwritten, and signed L. Wolf who I am guessing is related to Spence Wolf."
I have seen this bike, know the owner, and for whatever it's worth, can attest to the honesty of the seller.
Cheers.
Tom Hayes
Chagrin Falls, (still cold) Ohio USA