Try Bat Conservation International. They have books, DVD's and lots of other info.

The University of Florida has a huge bat house.
http://gainesville.about.com/od/artsentertainmentevents/gr/BatHouse.htm

Here is a link that might be useful: Bat Conservation

thanks.. that's actually where I got the plans for my existing bathouse.

they don't have anything the size of what I'm looking for right now.. the plans I'm seeking, the house is really the size of a shed.

thanks though.

The size of a shed!? Good gracious.. you must have tons of bats! Must be quite a show at night where you are.