After a couple meetings with the architect we'd chosen to design our new custom home, it became apparent that he wasn't listening to what we were asking for. After a hefty hourly bill, we ditched him and went back to trying to come up with a plan on our own.
To that end, I checked out several books from our local library that claimed to have hundreds of farmhouse-style floor plans. I basically just put "farmhouse plan" into the library's search form and took what it gave me. Those three books combined showed us 745 plans that somebody might consider to loosely resemble farmhouses.