1Robert Patterson to Thomas Jefferson, 20 June 1816 (Jefferson Papers)
Philadelphia Museum; gaslights in [index entry]
2Enclosure: Charles Willson Peale’s Sketches of an Apparatus for Gas Lighting, [ca. 20 June 1816] (Jefferson Papers)
Philadelphia Museum; gaslights in [index entry]
3Charles Willson Peale to Thomas Jefferson, 9 August 1816 (Jefferson Papers)
Philadelphia Museum; gaslights in [index entry]
4Charles Willson Peale to Thomas Jefferson, 7 July 1816 (Jefferson Papers)
Philadelphia Museum; gaslights in [index entry]