I received a great deal of help from a journalist, Alexenia Dimitrova, who searches for lost relatives and reports those searches in the daily paper 24 Hours. She is based in Sofia and has a network of contacts in other cities. I have found her to be helpful and trustworthy. Alexenia helped my sister and me locate three second cousins, relatives of our grandmother. If you feel she can help you, I would suggest contacting her:
alexbul@hotmail.com. Any family information and documentation you can provide will be helpful.