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.

Notes by John Parnther of Peterhouse College on a series of lectures given at Cambridge University. Lectures by N. Saunderson and Robert Smith on hydrostatics, sounds, optics, mechanics, astronomy, the tides, technical chronology, dioptrica and catoptrica.

The festschrift is 'Vistas in Astronomy' edited by Arthur Beer of Cambridge Observatories.

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.

There was a Richard III exhibition in London at which the Lady Margaret potrait was displayed. Peck observed the planet Venus.

The letter accompanied a copy of Newton's 'Principia'. It explains the nature of the work, and especially the theory of tides. It begins 'May it please, &c. I could not have presumed ...', and concludes 'I doubt not but if your Majestie shall please to suffer me to be admitted to the honour of your presence I may be able to give such an account thereof as may be to your Majesties full content. I am, &c., Edmond Halley'.

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.

The log book of HMS Adventure compiled by W. Bayly during his passage to the South Seas as part of the expedition led by Captain James Cook in HMS Resolution.

The log book of HMS Resolution compiled by William Wales during the passage to the South Seas under the command of Captain James Cook.

The collection consists of Roger Long's Commonplace Books and notebooks as well as posthumous material collected by the College.

Lunar tables in longitude and latitude according to the Newtonian law of gravity, by Charles Mason, 1778. The volume includes a disapproval of Mason's fee from the Board of Longitude [RGO 4/86: 2]; an example of computing the Moon's longitude and latitude; annual equations of the Moon's anomaly and ascending node; and computed longitude and latitude compared with observed longitude and latitude, with corrections, 13 September 1750 - 2 November 1760 [RGO 4/86: 14r].

Mainly ex-RGO Library copies of RGO manuals. Many are photocopied manuals with original RGO library reference numbers on the cover. Includes some duplicates of manuals held elsewhere in the RGO archives. Arranged in chronological order.

Various rough drafts of the solution of astronomical problems.

Note that there is no letter numbered 14.

The Nathy O'Hora papers include the research, publications, and presentations of himself, others, and the RGO. This research notably includes eclipses, a topic to which O'Hora devoted considerable time after retiring. The collection also includes papers and correspondence relating to the Time Department where he worked, his notebooks on various scientific theories and practices, ledgers that he used to record weather data, newspaper clippings, and photographs.