A lot of links has been broken, so I´ve tidied up and added a few
ROMANIAN PHILATELY Romfilatelia Filatelic Federation Romanian National Philatelic Museum
Romania shown by its stamps Romanian revenues    
COLLECTORS Fritz Heimbuchler Paul Hirsch Dan Dobrescu
Jay T Carrigan Laszlo Kallai    
*
AUCTIONS/ DEALERS EBAY(own frame) Ebay Germany (this frame)
Ebay Germany (own frame)
Heinrich Koehler
  
  Sandafayre Philea Klassische Philatelie
David Feldman Harmers of London James Bendon Corinphila Auktionen
Philatino Delcampe    
*
BULGARIA Stamps of Bulgaria Bulgarian Post Bjorn Bakken
HUNGARY Hungarian philately Hungarian Postal history Brittish Hungary site
CZECHOSLOVAKIA Society for Czechoslovak philately Peters page  
MOLDOVA Posta Moldovei Moldovastamps  
*
RESOURCES Sweden Postal Museum Collectors Club of Chicago Briefmarken.com
Stamp Link A.J. Encyclopedia Lee's Stamp Listopedia Stamps Listing
British Library Special Collections Stampworld Stamp collecting tips  
*
EXHIBITIONS Stamps Shows NAPEX  
STAMP EXCHANGE Allstampsparadise