During some primary source research, I came across this:
http://bookstore.gpo.gov/actions/PublicationSearch.do?criteria=GENERAL_SEARCH~%22american+revolution%22~PURCHASABLE~+1&resultUrl=/baskets/american-revolution.jsp (http://bookstore.gpo.gov/actions/PublicationSearch.do?criteria=GENERAL_SEARCH~%22american+revolution%22~PURCHASABLE~+1&resultUrl=/baskets/american-revolution.jsp)
The prices are absurd but scroll down to the posters and you will find some interesting teaching aids. Laminate these and they will last many a shoot.
(http://bookstore.gpo.gov/images/covers/024-005-00622-2.jpg)