Renegade Miniatures:
http://renegademiniatures.com/am_civil.htm
Dixon Miniatures:
http://www.dixon-minis.com/dixoncatalogue.asp?maintype=7
Ellerburn Armies:
http://www.hinchliffe.co.uk/
Old Glory Miniatures:
http://www.oldgloryuk.com/disp_items.php?m=10&sh=2
RAFM Miniatures:
http://www.rafm.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=RAF&Category_Code=ACW
Wargames Foundry:
http://www.wargamesfoundry.com/collections/ACW/index.asp
Redoubt Enterprises:
http://www.redoubtenterprises.com/shop/?page=shop/browse&category_id=ffde61eb8243ee6a271642c091c663e5