Those do seem to have the feel of the civil war fabrics. Usually the CW fabrics are copied from actual fabrics from that era. Here are a few sites that have really nice repoduction fabrics
http://www.bonniebluequilts.com/default.aspx
http://www.sugarhousequiltshop.com/index.html
http://www.this-n-thatfabrics.com/
http://www.colonialcrafts.com/
Yours are very pretty.