The following expert presentations are available:
Presentation Lithos Vs. Engraved made on 10/30/2021 by Csaba Kohalmi
Presentation Postal Stationery made on 02/12/2022 by George Shaw
Presentation Balloon Posts made on 03/12/2022 by Vic Berecz
Presentation Postal History of the Lost Territories made on 08/27/2022 by Robert Lauer
Presentation German Censorship of WWII made on 09/10/2022 by Jan Jaap de Weerd
Presentation Altering Hungarian Cancels After the 1918-19 Breakup made on 11/12/2022 by Johan Sevenhuijsen
Presentation 1896 Illustrated Postal Cards made on 01/14/2023 by Csaba Kohalmi
Presentation Constant Plate Varieties for Kolozsvar and Nagyvarad Overprints made on 05/13/2023 by Chris Brainard