Hi John,
As for your question it sounds like the Historic Joinery series suggested by Jim would be a good place to start.

My question for you is how you cut the joints for the upper ends of the rafters. Did you cut step lap rafter seats in the top of both the lower wall plate and the upper girt? What is the roof pitch of the shed? I've always wondered what the best/proper joint is to use at the top of a shed roof.

Thanks,
Chip