(Maryland State Archives)
Hockley Forge
1760 - Built of stone
Saw Mill
Built before 1794 - Frame construction
Hockley-in-the-Hole (of Howard County)
One-story brick structure, 42 by 15 feet, built by 1798.
Named after a separate land tract called "Hockley-in-the-Hole" by patented by Edward Dorsey in 1664.

Dairy, Smokehouse, Log Kitchen, (2) Frame Kitchens, (3) Wood construction Oat Houses
Multiple supporting buildings built before 1798
Grist Mill
Built prior to 1794 - Four-story brick construction, 60 by 44 feet, burned in 1851, damaged or destroyed by flood on July 24, 1868.

Slittling Mill
Built before 1798, 45 by 24 feet, stone
Blacksmith shop
Built before 1798, 30 by 16 feet, Stone construction
Saw Mill
Frame construction - 46 by 14 feet Built prior to 1798
Stable
Log building 25 by 18 feet built prior to 1798
Kitchen
Brick construction - built prior to 1829
Distillery
Built in 1829 - 102 by 42 brick construction, ceased in 1833
Malt House
Built in 1829 - ceased in 1833
Cooper's Shop
Built prior to 1829
(5) Slave quarters, Barn and Stables
Built prior to 1829
Thomas Viaduct
Curving stone arch bridge built in 1833 running across the river valley at the Hockley Forge site to start the first leg of the Baltimore and Ohio Railroad.

Grist Mill
Two story flour mill built on East side of viaduct in 1852
Grist Mill House
Telescoping structure with slave quarters.
(Maryland State Archives)
Hockley Forge
1760 - Built of stone
Saw Mill
Built before 1794 - Frame construction
Hockley-in-the-Hole (of Howard County)
One-story brick structure, 42 by 15 feet, built by 1798. Named after a separate land tract called "Hockley-in-the-Hole" by patented by Edward Dorsey in 1664.
Dairy, Smokehouse, Log Kitchen, (2) Frame Kitchens, (3) Wood construction Oat Houses
Multiple supporting buildings built before 1798
Grist Mill
Built prior to 1794 - Four-story brick construction, 60 by 44 feet, burned in 1851, damaged or destroyed by flood on July 24, 1868.
Slittling Mill
Built before 1798, 45 by 24 feet, stone
Blacksmith shop
Built before 1798, 30 by 16 feet, Stone construction
Saw Mill
Frame construction - 46 by 14 feet Built prior to 1798
Stable
Log building 25 by 18 feet built prior to 1798
Kitchen
Brick construction - built prior to 1829
Distillery
Built in 1829 - 102 by 42 brick construction, ceased in 1833
Malt House
Built in 1829 - ceased in 1833
Cooper's Shop
Built prior to 1829
(5) Slave quarters, Barn and Stables
Built prior to 1829
Thomas Viaduct
Curving stone arch bridge built in 1833 running across the river valley at the Hockley Forge site to start the first leg of the Baltimore and Ohio Railroad.
Grist Mill
Two story flour mill built on East side of viaduct in 1852
Grist Mill House
Telescoping structure with slave quarters.
Hockley Forge and Mill