Jacob Keller Farm
The Jacob Keller Farm, also known as the Covered Bridge Inn-Bed and Breakfast, is an historic American home and grist mill located in Ephrata Township, Lancaster County, Pennsylvania. 

It was listed on the National Register of Historic Places in 1986.

History and architectural features
The original section of the house was built in 1814, and is a -story, five-bay wide, limestone, Federal and Germanic-style dwelling. A two-story, three-bay frame addition was built circa 1856. The Rettew's Mill or Aaron Roller Mill is a stone mill built sometime around 1814. The property also includes the stone foundation of a barn that was also built circa 1814.

It was listed on the National Register of Historic Places in 1986.

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Houses on the National Register of Historic Places in Pennsylvania
Federal architecture in Pennsylvania
Houses completed in 1856
Houses in Lancaster County, Pennsylvania
National Register of Historic Places in Lancaster County, Pennsylvania