David Rittenhouse's home at 7th and Mulberry Streets, Philadelphia, PA, by C. H. Wells, 1857.
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Watercolor corner scene of home.

Credit: Courtesy of the Library Company of Philadelphia

In 1786 David Rittenhouse commissioned master builder Joseph Ogilby to build him a house at the corner of 7th and Mulberry (Arch) streets, in which he erected an observatory and used a telescope of his own design to continue his celestial observations. In 1790 Congress appointed Rittenhouse first Director of the U.S. Mint, which operated from a building erected in 1792 just down the block from his home.

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