Cavaliers and Roundheads is a set of rules for fighting miniatures battles for the English Civil War. This booklet, which was done by Gary Gygax and Jeff Perren, was the first product released in 1973 by the new company of Tactical Studies Rules or TSR Hobbies. There is some staining on the front cover and some wear especially along the spine but the content pages are Very Good and there is no staple rust.