IF you wish to research your family tree and your family is from the Virginia Shore, this is a great place to start. It has a wealth of Shore history, and noted Historian Miles Barnes.
Nock Family Heritage
History of the Extended Nock Family
History of the Nocks
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U.S. National Archives
Library of Virginia
Eastern Shore Historical Society
Edward H. Nabb Research Center
Eastern Shore Public Library (Accomack, Virginia)
Great Resource For Nock Research
Ancestry.com
Cindi’s List
Nock Family Around The World
The Eastern Shore of Virginia – The ancestral home of most American born Nocks
Albert Jay Nock
Admin-Facebook Profile
Nock Family Heritage 
I have been to this library. It is an excellent resource for the study of family history.