I have an excellent book, "Electrician's Guide to Conduit Bending" by Richard A. Cox, and sold by his company COXCO. He also published a book about PLCs and one about motor control. I found a link to his company on the web, but I get a message saying the page isn't available. Does anyone know about his company, is it still going, and how I can get in touch with him to purchase some books?