My husband has several lines which I’ve researched in Maryland, but I’ve only just noticed that I’ve never compiled a list of local resources.
I’ll begin with one of my favorites – the Maryland Calendar of Wills, many of which are digitized and online.
The Maryland Calendar of Wills
by Jane Baldwin Cotton & Roberta Bolling Henry
Volumes 1-6 are links to HathiTrust. Volumes 7 & 8 link to FamilySearch; you might need to log into your account to view these. Volumes 9-12 were published much later and are still under copyright.
Afro-American Historical & Genealogical Society – Prince George’s County
Archives of Maryland Online
Central Maryland AAHGS – Afro-American genealogy research group
Crisfield Heritage Foundation
Enoch Pratt Free Library – Finding digitized Maryland newspapers online
Garrett County Historical Society Museums
Historical Society of Cecil County
Maryland City Directories – University of Maryland Special Collections
Maryland Historical Society – Digital Resources
Prince George’s County Historical Society
Queen Anne’s County Historical Society
Riversdale Historical Society
Upper Shore Genealogical Society of Maryland