I am interested in butterfly patterns for a program that I present once a month at the local nature center. I have found an assortment of patterns and am searching for historical patterns that were used in different time frame of American history. Any help you can give me would be great!!! Websites to search and study. Or site(s) that would let me download a historical pattern. I am not one for spending a lot of time searching without a lead. Thanks for your help in advance.