Getting John Wright pans from your nana is a real treasure!
John Wright was better known for cast iron bakeware and decorative pieces and their recipe booklets were often short inserts rather than full cookbooks, so many of the recipes were reprints of standard muffin and cornbread formulas. Have you tried reaching out to historical cooking groups or archives, since some of them have scanned pamphlets from cookware makers that aren't widely shared online?