I have to crow a little about this... There was an auction last week of Ohio Scientific literature on ebay. I looked at it and, at first, I thought I had everything in the lot. Then I looked again and realized that I didn't recognize the little (difficult to see) pamphlet in the upper right corner of the lot photo. I thought about it for a few days and wondered whether it could be one of their first pamphlets. I decided "what the heck" I'll bid if it doesn't get too expensive. Well, I won the lot. It just arrived today and sure enough that little pamphlet is one of the first (if not the first) ad pamphlets from OSI. It introduces the original Challenger (no 1, 2, etc.) available with 6502 or 6800 processors, the original Superboard (Model 400, not the SuperboardII Model 600) and the Model 300 6502 trainer with the Superboard upgrade program (buy a fully assembled Model 300, keep it for up to two months and then trade it in for a Model 400 kit). Happy, happy, happy! -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.11.6/428 - Release Date: 8/25/2006