Eugene doesn't think he has the plan anymore, but it's not that difficult to put some together. I'll provide the photo tomorrow.
Again, though, what are you using the leanto shed for? And, approximately, how large do you want to make it in terms of foot print.
Also, what state are you in?
I am not an expert, but things that would seem to matter are:
*Is this a wood shed (need ventilation for drying
*Can one side be open or do you need to be able to lock it
*Do you get a lot of rain (will you need PT or dry pine and paint, type of shingles onthe roof, etc)
Eugene is pretty experienced at building things like this. If you can give me an idea what you are looking for, we might be able to give you something useful.
Another option, like I did, is to get some design software. I used Punch! Platinum. It's pretty easy, it has a Frame Wizard that will provide a whole bill of materials for you based on your Wall, Floor and Roof design.
Anyways, I look forward to hearin your answers.