AFAIK the first 'compact' road frames were built by Dave Lloyd in the early 90s - funnily enough called Concept 90. I came close to getting one for myself. Mike Burrows subsequently 'borrowed' the idea and flogged it to Giant - the rest is history. Colnago also made a few one-offs for the likes of Tony Rominger about 92/93 featuring 650c wheels - but you'll struggle to find one and prices would be astronomical. I'd certainly check out the bike fit calculator and see what dimensions suit you - 'virtual top tube' dimension is the one that's critical - allows you to compare traditional or compact frames