
DUNCAN BARBER, ROYAL PHILATELIC SOCIETY OF CANADA (RPSC) STAMP TALK, 11 SEPTEMBER 2023

DUNCAN BARBER, BRITISH EMPIRE STUDY GROUP, 12 DECEMBER 2024

HAROLD KRISCHE, BRITISH EMPIRE STUDY GROUP, 13 JANUARY 2025

PAUL SARJEANT, NORTH TORONTO STAMP CLUB (NTSC), 20 FEBRUARY 2025

PAUL SARJEANT, NORTH TORONTO STAMP CLUB (NTSC), 16 NOVEMBER 2023

By: Jean Wang, American Topical Association (ATA), 2022 January 21

By: Jean Wang, Postal History Society of Canada (PHSC), 2024 May 21

By: Jean Wang, American Philatelic Society (APS), 2023 August 2

By: Jean Wang - American Topical Association (ATA), 2025 January

By: Sidney Mensinga - West Toronto Stamp Club, 2024 November 19

By: Gregg Redner - France and Colonies Philatelic Society-US, 2024 October 27

By: Harold Krische - APS Stamp Chat, 2024 March 29

By: Harold Krische - APS Stamp Chat, 2021 Dec 14

By: Raymond Villeneuve – Postal History Society of Canada, 2024 September 17

By: David Foot – Royal Philatelic Society of Canada - STAMP TALKS, 2024 March 11