Mercer Museum, Doylestown, PA (completed in 1916.)

Mercer collected pre-industrial hand tools and other implements of the past. He believed that the story of human progress and accomplishments was told by the tools and objects that people used and saw these time-honored crafts slowly disappearing from memory.

Mercer personally designed plans for a museum to house his collection, six stories tall and cast of poured-in-place concrete.

In addition to tools, it displays furnishings of early America, carriages, stove plates, a gallows, antique fire engines, a whaleboat, and the Lenape Stone.