Stamps "USPS 1981 Definitive Yearbook" Book & Mint Stamps & Stationery

This is the 1981 United States Postal Service Definitive Stamps and Postal Stationery Yearbook complete with mint stamps and postal stationery.   Stamps and stationery  have been placed in the display mounts (hingeless) supplied by the postal service.  Book is in very good condition.