Adams DC8131 Purchase Order Book, 2-Part (50 Sets), 8-3/8" x 10-11/16", White/Canary 2-part carbonless  customers get the perforated white top copy; retain the canary copy for your records Areas for customer information, item description, order number, terms, date, shipping information, salesperson, and more Invoices are consecutively numbered within each book; the large number stands out on the page Wrap around cover prevents messy write-through Size is 5-9/16" x 8-7/16