FIAP Expertizing Committee
Hong Kong: stamps and postal history; Russian P.O. in China, French P.O. in China.
Hong Kong, stamps and postal history; Russian Post Offices in China
Individual member of expert committees whweby the committee issues collective opinions, but the individual committee members do not issue certificates
British P.O. in Chins (G 2006) Hong Kong postal history (LG 2000)
articles in London Philatelist
Hong Kong Philatelic Society; Hong Kong study circle, Fellow RPS,L