The state archives and library at Albany, New York are 60 miles from me. Some early Otsego County records are kept in Montgomery County requiring approximately 40 miles travel, one-way. Researching the history of a family should involve a thorough search of county archives, e.g. mortgage, land conveyance, Surrogate's Court record, etc. These are the best official sources available to establish family origins, locations, and connections.
Some towns have obscure holdings ca.
The Mormon Church , a.k.a. It has its Family History Centers spread out all over the world. Access is free. Much of the information in their databases is not documented, but it provides a good start. Many vital records and books on microfilm can be rented.