Seventeen letters from Captain Matthew Flinders, his brother Lieutenant Samuel Ward Flinders, the astronomer John Crosley, Captain Thomas Hurd and the Astronomer Royal, John Pond. Also included are copies of relevant minutes of the Board of Longitude, a proposal by Captain Flinders that the whole of the calculations for the voyage should be calculated, and a petition by Samuel Ward Flinders for remuneration for work he had done on the observations.

A single volume of bound letters.

A diary of work performed on the 'Nautical Almanac' and arrangements for its compilation and publication.

Miscellaneous draft letters.

The collection primarily consists of the Maunders' published works both on their research and explanatory works on astronomy for a more popular audience. Some of these publications bear annotations. There are also some notes on a variety of subjects, a pin-hole camera, a planisphere and some items of correspondence. There is supporting material in the form of obituaries, letters of condolence and subsequent published works on the Maunders and their work.

A collection of papers concerning horology and clockmaking. It includes correspondence between Ernest C. Atkinson and a range of people connected with horology and timekeeping, including Humphry Smith and other members of the RGO’s Time Department. The collection also includes pamphlets, leaflets, papers and booklets, brochures for watch sales, admiralty notices to mariners re time signals, sets of notes, graphs and calculations, and a small number of photographs of clock parts.

'To clear the distance of the Moon from a star from the effects of refraction and parallax', February 1766. The envelope includes copies of reports made to the Board of Longitude by John Howe, undated, and M. Raper of Thorley Hall, 9 July 1765, on the method of Israel Lyons and George Witchell for correcting observed distances. There are also a number of tables on the Sun's parallax.

An incomplete series of ING Technical Notes.

20 volumes of typed or photocopied texts bound with green covers, with 14 duplicate copies. The following abbreviations are used in the titles: ISIS: Intermediate Dispersion Spectroscopic Imaging System; LDSS: Low Dispersion Survey Spectrograph; WHT: William Herschel Telescope; INT: Isaac Newton Telescope; MPF: Multi Purpose Fotometer; ADAM: Astronomical Data Acquisition Monitor; and CCD: Charge-coupled device.

This journal is fully indexed. It contains Franklin-Adam’s work and memoranda from June 1897 to 23 June 1906. Readings and observational data form the main content. It also includes detailed accounts of adjustments and corrections to the Equatorial Telescope, Transit Circle, Azimuth, Cape Town Instruments, chronometers and clocks. A preface describes his observatory and instruments.

This series comprises four folders of letters sent by Lady Clive to her brother Nevil Maskelyne, her niece Margaret Maskelyne, and to other family members. The letters span 55 years, from 1762 until Lady Clive's death on 28 Dec. 1817. Many mention astronomy, including sightings of the great comet of 1811.
The series also includes a set of copies of family letters (including some written by Nevil Maskelyne), and notes by Theresa Story-Maskelyne on the letters of Lady Clive.

Concerning calculations of the time of the lunar eclipse of 3 April [AD] 33 [and its identification as eclipse recorded as occurring on the day of the crucifixion of Jesus Christ].

The letters are primarily from Nevil Maskelyne but include three sent to Andrews by Margaret Maskelyne, following the death of her father.