+ What they said.
The Terry-designed frames were only made, from what I can gather, in mid-level quality and above. I've seen them with Tange 1, Tange 2, and Tange Prestige frames. Many different bike firms presented a model with this design, and there is an active bunch of owners today.
The 24x1 wheel is, if it's a Tange frame, the 520, and tubes and tires are available, even in a fairly narrow tire. The front wheel is available by special order from some bike shops, and once in a while they pop up on eBay, often listed as a 24" wheel, so it would take a little research to find the 520. Depending on clearance and brake reach, you can find a close enough wheel.
I'd suggest site mash or something where you can search bicycles, list Terry and 24" and see what comes up.
Last edited by RobbieTunes; 02-04-10 at 03:05 PM.