I got my info from LEON DIXON/NBHAA.com. I guess there is discussion both ways as to whether or not it's worthwhile to go to him. I paid something like $26 for the info. It was the first old bike I've ever purchased and I came across his website and had him ID it. I'm comfortable that the info I got was accurate. As far as the fee, I don't have a problem with it. I knew the cost before I made the request, so that was OK. It took about three weeks to get the info. The only issue I had was that the photocopies of the catalog pages had a HUGE stamp across them that said "This information provided courtesy of...etc". First of all if it was "courtesy of..", it should have been free and secondly the stamp took up nearly a quarter of the page. And it wasn't like a watermark, it was a black stamp that actually covered up some of the details on the bike I would have liked to have seen. He has a lot of notices of copyright on everything, which is kind of strange, since he wasn't the original producer of the material and I doubt he has bought the rights to the info. I don't think you can claim a copyright on other's published works, but I could be wrong.
Anyhow, if I had it to do over, I would probably spend some time on here and The CABE and get the same info for free and get more enjoyment out of the experience, to boot.
My 2 cents