I have actually made 2 vintage handkerchief quilt, that's where I got the idea of the foundation piece to stitch the pillowcases to. That idea still may be the most viable option I have for preserving the decorative edges. Thank you for our response!
http://www.quiltingboard.com/picture...s-t120760.html
I forgot to add that I want to embroider the name of the person who embroidered them for us under each pillowcase.