I've been wanting to do something similar as an educational exercise: build the original satoshi client and then push the changes version by version to see how the client evolved over time.

This is the place I found to download the original client v0.1 : https://github.com/0xMagnuz/Bitcoin-v0.1/tree/master/bitcoin0.1

Slightly different than the OP, but if anyone has any resources related to this side-quest, or threads here on bitcointalk to go to, would be much appreciated.