Ayres Scale Models_ Model Builder's Manual & Catalog No. 20 By Ayres Scale Models Books / Paperback Crafts & Hobbies › Games & Gaming Publisher: Ayres Scale Models, Price $12.51 Free Shipping Send to a friend Used - Good Good condition. No date stated. (Hobbies) $12.51 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.