2018Vol.49 - No.4

6The Amazing, Prolific Marketing of the 1901 Pan American Exposition Souvenir StampsRick Barrett
18Confederate Postal History: Camp Chase Prisoner of War Archie LivingstonPatricia A. Kaufmann
22William S. Linto: A Prolific CachetmakerRalph H. Nafziger
27Postal History Rarities: A Rare Aerogramme HPO to JavaPeter Martin
28A ‘Message in a Bottle’James Weigant
30Small Bites of Great American Postal History: 1940 New York World’s Fair Employee InternedLouis Fiset
32Celebrating 50 Years of La Posta—A RetrospectiveCate Clark
34President John Tyler, The Accidental PresidentJesse I. Spector
41Ephemera Corner: Christmas 1914Peter Martin
42U.S. Auxiliary Markings: Customs Duty Markings on Incoming Covers Part Six: Out-of-the-Ordinary CoversJohn M. Hotchner
48The Earliest Puerto Rico Typewriter AdvertisingPeter Martin
50Postal History at the American Philatelic Research Library: A Golden Anniversary—50 Years of Research and ResourcesScott D. Tiffney
51A Merry Christmas From Santa Claus, Indiana 
52U.S. Post Offices: Iowa Post OfficesSteven J. Bahnsen
57Snapshots: United Air Lines Airmail