RC (DLC); edges frayed; at foot of text: “Thomas Jefferson, late President of the U.S.”; endorsed by TJ as received 26 Apr. 1810 and so recorded in SJL. Enclosure: two copies of Report of the Committee to Whom Was Referred, on the Twenty-Fifth of January, 1810. the Memorial of William Lambert, Accompanied with Sundry Papers Relating to the Establishment of a First Meridian for the United States at the Permanent Seat of Their Government. March 28, 1809 [1810]. Ordered to lie on the table (Washington, D.C., 1810; also printed in ASP description begins American State Papers: Documents, Legislative and Executive, of the Congress of the United States, 1832–61, 38 vols. description ends , Misc., 2:53–71), in which the committee recommended that the president be empowered to procure the instruments necessary to ascertain the longitude of Washington City as measured from the observatory at Greenwich, and also containing Lambert’s memorial, Washington, 15 Dec. 1809, seeking legislative support for an American first meridian and providing the following documentation: “Abstract of Calculations To determine the longitude of the Capitol, in the City of Washington, from Greenwich observatory, in England, founded on an occultation of n. Pleiadum (Alcyone) by the moon, which was observed near the president’s house” on 20 Oct. 1804; “Rules And Series For computing the moon’s longitude, latitude, right ascension and declination, and its hourly velocity, at any intermediate time between 0 and 12 hours, having the positions given as stated in the Nautical Almanac, or Connoissance des Temps,” 14 Nov. 1809; Observations and calculations of the moon’s semidiameter for use in determining latitude and longitude, 9 Mar. 1810; and “Concerning the spheroidal form of the earth, and a proper method of reducing the latitude of a place, by observation, and the moon’s horizontal parallax, as referred to the earth’s center, according to any assumed ratio of the equatorial to the polar diameter,” 2 Apr. 1810.