Baltimore County Public Library does not have a list of professional genealogists. However, you might try the list prepared by the Maryland State Archives http://guide.mdsa.net/viewer.cfm?page=genealogists
The Maryland Genealogical Society located in the city of Baltimore provides limited research services and may be able to suggest a genealogist who will do research for you. For more information, see http://www.mdgensoc.org/cpage.php?pt=15
