the inclusion of a link in this list does not
imply any endorsement.
THE BRITISH
POSTAL MUSEUM & ARCHIVE
THE EPHEMERA
SOCIETY
the LETTER BOX
STUDY GROUP
MAKERS' MARKS ON BRITISH
SILVER
THE MAUCHLINE
WARE COLLECTORS CLUb
THE NATIONAL archives
THE NATIONAL
PHILATELIC SOCIETY
The Online Encyclopedia of
American Silver Marks
THE POSTAL
STATIONERY
SOCIETY
THE POSTCARD
TRADERS ASSOCIATION
THE ROYAL
PHILATELIC SOCIETY LONDON
the WRITING EQUIPMENT SOCIETY
