Ganesha Games have made a PDF with counters for their ’61-’65 American Civil War game available for download.
From their announcement:
Kevin Holland of the songofblades Yahoo! Group created a pdf of infantry counters for those players who want to try our ’61-’65 ACW rules before committing to painting models. You can find it on our downloads page, just scroll to the bottom of Ganesha Games’ downloads page.