Letters to Maskelyne and related papers on the minor planet Ceres.
i. Letter from Dr Gauss, Brunswick, Germany, 20 February 1802, on ephemeris of Ceres, March-April 1802.
ii. Letter from Dr Gauss, Brunswick, Germany, 3 April 1802, on ephemeris of Ceres, 21 April - 29 June 1802.
iii. Letter from Dr Gauss, Brunswick, Germany, 30 January 1803, thanking Maskelyne for his present of Taylor's tables and giving corrections to the observed position of Ceres.
iv. Geocentric motion of Ceres, 4 February - 9 August 1803.
v. Stephen Lee's observations of Ceres at Hackney, London, 8 February 1802.
vi. Letter from George Gilpin, Somerset, 4 February 1802, containing observations of Ceres by Baron Francis von Zach.
vii. Observations of Ceres by A. Aubert, Austin Friars, 9 February 1802.
viii. Letter from Baron von Zach, Seeberg Observatory, Gotha, Germany, 15 March 1802, on the minor planet Ceres, including an ephemeris, stars observed with the planet, discoveries in Australia, a new duplicating process and errors in Burg's new lunar tables.
ix. Letter to Sir Joseph Banks from Baron von Zach, Seeburg, Germany, 30 March 1802, containing elements of Ceres and a star catalogue. There are descriptions of Ceres, information on the clandestine Austrian printer and Leonhard Euler's chess problem.
x. Letter from Baron von Zach, Seeberg Observatory, near Gotha, Germany, 4 May 1802, containing notes on the faults of his telescope and references to Ceres in his scientific journal.