I collect error Cards, variations, and all Garrett Whitley or Ian Anderson cards.
I also have a LARGE quantity of 1991 Topps separated out by glow back, non-glow, bold logo, etc. I don't have them listed on the site as there is no way to distinguish between the glow and non-glow backs. If you collect these and are looking to trade, please look me up and we will certainly figure something out!