The 44th Edition of The Postal Service Guide to U.S. Stamps presents 171 years of U.S. stamps, from the Postmasters' Provisionals of 1845, through the final issuance of 2017. Beautiful high-resolution imagery and 2018 updated values accompany stamps and postal stationary from across the Postal archive. Special "back-of-the-book" sections include the 19th century Newspaper and Periodical stamps, Airmail, Special Delivery, Official Mail, and Federal Duck Stamps. The Guide opens with an introduction to the hobby and tips on stamp collecting, and mini stamp stories are sprinkled throughout the book. Each era of the U.S. stamp program is introduced with a story about philatelic highlights from that period. The 44th Edition is also available as an eBook.