David Rittenhouse: Astronomer Patriot, 1732-1796 - Paperback

David Rittenhouse: Astronomer Patriot, 1732-1796 - Hardcover

David Rittenhouse: Astronomer-Patriot, 1732-1796 - Hardcover

The Most Important Clock in America: The David Rittenhouse Astronomical Musical Clock at Drexel University Transactions, American Philosophical Societ - Hardcover

The Life of David Brainerd, Missionary to the Indians: With an Abridgement of His Diary and Journal: From President Edwards. - Paperback

The Life of David Brainerd, Missionary to the Indians: With an Abridgment of His Diary and Journal; From President Edwards - Paperback