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.
ORDER FORM
You may print, complete the Order Form [PDF, 169K] and mail it with your payment to:
Historical Society of Frederick County 24 E. Church Street Frederick, MD 21701
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. 
