Here are the two drafts I'm using. Since the fronts and backs of the shirts are interchangeable, I'm going to use the back DIA.1. and the fronted forepart DIA. 9. I'm doing this so that I don't have to make a yoke. Removing the yoke reduces the time and effort required to make the shirt.
Here are various fronts for the fronted forepart. For my shirt, I'm going to use a tucked or pleated front, as shown on DIA.6. Vincent said that tucked or pleated shirts were the most popular style of shirt around the 1860s.