Formed from Prince George’s County in 1748, Frederick County originally included all of what are now Washington, Allegany, Garrett and Montgomery Counties, as well as part of Carroll County. Today, Frederick County is the largest county in land mass in Maryland.
ATLASES & MAPS
1873 Titus Atlas of Frederick County, Maryland
Used extensively by genealogists and Frederick history enthusiasts, it is truly a fascinating local history resource. Reprinted by Schifferstadt Architectural Museum, 2000, $20.00, member price $18.00
Bond Map of Frederick County, 1858
A great genealogical resource. Perfect for framing. $20.00, member price $18.00
Crossroads of History, Frederick County
Illustrated by John George. $9.00, member price $8.10
Lots in Frederick Town, 1876 $10.00, member price $9.00
Formed from Prince George’s County in 1748, Frederick County originally included all of what are now Washington, Allegany, Garrett and Montgomery Counties, as well as part of Carroll County. Today, Frederick County is the largest county in land mass in Maryland. 
