It is wise to acquaint yourself with any repository which you might visit by writing to the appropriate archive or library in advance. Every repository has published materials that introduce its collections and research policy. State archives and historical agencies also have Internet sites that provide the same information. Some even have downloadable databases for some or parts of their collections.
Maryland Historical Records - Databases include Maryland Court, Land, Wills & Financial Records; Maryland Birth, Marriage & Death Records; Maryland Voter Lists & Census Records; Maryland Immigration & Emigration Records; Maryland Obituary Records; Maryland Military Records; Maryland Family Tree Records; Maryland Pictures; Maryland Stories, Memories & Histories; Maryland Directories & Member Lists and much more....
Because family history research relies greatly upon records found at the county level, many local societies represent counties. Organizations also form around shared interests. Ethnic or religious origins account for many groups, such as the Polish Genealogical Society of America and P.O.I.N.T. (Pursuing Our Italian Names Together). Societies also form around common locales of origin for members’ ancestors; hence, the Palatines to America and Germans from Russia societies. To locate these and other societies, consult Juliana Szucs Smith’s The Ancestry Family Historian’s Address Book. It lists addresses, telephone and fax numbers, and Internet addresses of thousands of organizations throughout the United States.
For almost every state there is a state genealogical society, a state genealogical council, or both. In addition to their own work, state-level groups sometimes help coordinate the efforts of local societies within the state. Their publications, newsletters and quarterlies, supplement those produced by the local societies.