London
Found in 1559 Collections and/or Records:
Letter from John Barrow to Dr Thomas Young, 1822-04-03
Concerning the letter from Gore Ouseley at [RGO 14/55: 102-103].
Letter from John Barrow to Dr Thomas Young, 1823-11-24
Includes accounts of the rates of chronometers, reports on chronometer trials, and eleven related letters.
Letter from John Barrow to Dr Thomas Young concerning Massey's chronometer, 1818-11-22 - 1818-11-27
Twelve reports and two letters.
Letter from John Barrow to the Admiralty Office, 1822
The letter refers to the award of 100 guineas to Dr Franks for his work in determining the longitude of the island of Madeira.
Letter from John Battle on a perpetual lunar dial, 1826-12-13
Sent to Dr Thomas Young.
Letter from John Beale the Royal Society, 1806-08-08
Concerning a timepiece for longitude.
Letter from John Beale to George Gilpin, 1808-10-17
Informing the Board of Longitude that he had constructed an instrument to measure the time from the departure of a ship to its arrival.
Letter from John Beale to George Gilpin, 1808-11-25
Two letters from Beale, one of which is accompanied by a letter from a clergyman of his parish (Woodbury) attesting to Beale's good character.
Letter from John Boyle to the Board of Longitude, 1798-11-07
Two letters.
Letter from John Bradley to the Royal Navy, 1787-01-09
Outlining his proposed method of finding 'londdetude'.
Letter from John Bradley to the Royal Navy, 1787-01-09
Written to correct a previous error of calculation.
Letter from John Brand to James Farquhar, 1817-04-08
Enclosing the letter from David Christieson at [RGO 14/38: 340-341].
Letter from John Brent about a self-moving machine, 1791-12-03
Brent states that the machine could drive a mill and grind malt, and he hoped it could be of use to the commercial West India merchants for sugarcane production.
Letter from John Burnside to the Board of Longitude, 1827-01-01
Outlining his method of finding longitude. The letter was marked by the Board as 'Too ignorant to be answered'.
Letter from John Carey to Dr Thomas Young, 1825-05-28
Originally enclosing a paper on timekeepers.
Letter from John Carey to the Board of Longitude, 1825-05-24
Two letters.
Letter from John Carr to Dr Thomas Young, 1826-01-10
Correspondence regarding methods for establishing latitude.
Letter from John Carr to the Board of Longitude, 1825-11-28
Outlining his proposed method of finding latitude; includes a postscript note.
Letter from John Carr to the Board of Longitude, 1825-12-14
Correspondence regarding methods for establishing latitude.
Letter from John Carr to the Board of Longitude, 1824-02-22
Two letters.
Letter from John Carr to the Board of Longitude, 1824-03-11
Two letters.
Letter from John Charles Sander on a self-regulating clock, which was also a machine of perpetual motion, 1803-01-04
Sent to Evan Nepean.
Letter from John Cole to Dr Thomas Young, 1822-03-02
Paper and two letters.
Letter from John Cooper on an instrument for finding longitude without the help of another instrument, 1791-04-29
Letter from John Couch to Dr Thomas Young, 1819-01-19
Concerning a number of planned improvements to navigation including: a kite for communicating with ships in distress; a proposal to replace hay for cattle on board ships with dried parsnips and carrots to avoid fires and sodden hay; and a new copper limber-chain and tar-lamp.