In Ted Nugent's book "Kill it and Grill it" he's got a couple of them.
I think the book that comes with the Little Chief Smoker has some recipes too but I'm not positive.
I used to make smoked duck sausage and loved it. Now I'm lazy and take my meat in and have it done.
There is a guy in Pike Place Mkt that will do small batches and guarentee it's all your meat.
Most other places will mix meat with that small of a batch.
I do have a summer sausage recipe if you want one.