Dragomir Zagorsky  Dragomir Zagorsky was a Bulgarian author and philatelist, described by Ivan Metchev as the "greatest expert and collector of Bulgaria of all time". He wrote widely on the postage stamps and postal history of Bulgaria and Eastern Roumelia. His book, "The Jews of Bulgaria: A Collection of Bulgarian Judaica Jüdische" (c. 1989), described, through the correspondence of Jewish merchants, the development of postal communications in Bulgaria between independence in 1878 and the Second World War.