Mystic Seaport Museum

Mystic, Connecticut.

The Macon - Bibb County Public Libraries

Georgia. Serving Bibb, Crawford, Jones, Macon, Twiggs, & Wilkinson counties.

The Maine Memory Network

Maine's online museum, a project of the Maine Historical Society.

The Mariners' Museum - Newport News, Virginia

Archives, manuscripts, manifests & research services available.

The Maryland Historical Society - Library of Maryland History

The Massachusetts Library and Information Network

The Mercer's Company Archives

Hold the historic records of the Mercers' Company of London from 1348 to the present.

The Metropolitan Police Service Historical Archives

London, England.

The Moravian Church Archive and Library

London, England. Archival collection of the British province of the Moravian Church.

The Municipal Archives of the City of New York

The Museum for Gillingham

England.

The Museum of African Slavery

The Museum of Afro-American History Boston

Massachusetts.

The Museum of English Rural Life

Reading, Berkshire, England.

The Museum of Family History

This virtual museum honors and preserves the memory of Jewish families, history and culture, and offers much information of relevance to those who might be researching their Jewish roots.

The Museum of New York City

The Museums of the Royal Regiment of Wales