London
Found in 1996 Collections and/or Records:
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.
Letter from John Couch to Dr Thomas Young, 1823-04-25
Requesting a reward for various nautical improvements including: an apparatus for landing or making a descent in a gale; a direction bearer; a main topsail storm staysail for preventing a line of battleships from broaching-to in gales; swivel frame-blocks for better working the mizzen topsail; a storm-stay trysail; and a theodolite with a reading mirror.
Letter from John Couch to John Wilson Croker, 1818-05-05
Concerning the publication of improved lunar tables.
Letter from John Couch to Lord Viscount Melville, 1818-09-26
Concerning errata in the Nautical Ephemerides.
Letter from John Croker to Dr Thomas Young, 1819-06-20
Concerning the superintendence of chronometers given to the Hydrographer.
Letter from John Croker to Dr Thomas Young, 1823-02-25
Includes accounts of the rates of chronometers, reports on chronometer trials, and eleven related letters.
Letter from John Croker to Dr Thomas Young, 1823-04-19
Originally enclosing the letter from John George Hartley at [RGO 14/38: 418-419].
Letter from John Croker to [Dr Thomas Young?], 1823-04-25
Includes accounts of the rates of chronometers, reports on chronometer trials, and eleven related letters.
Letter from John Croker to [Dr Thomas Young?], 1823-04-26
Includes accounts of the rates of chronometers, reports on chronometer trials, and eleven related letters.
Letter from John Croker to Dr Young, 1822-10-14
Concerning a letter from Fearon Fallows at the Cape Observatory.
Letter from John Crosley to John Pond, 1812-11-28
Concerning recalculations of observations from a voyage of HMS Investigator.
Letter from John Crosley to the Board of Longitude, 1814-03-03
Concerning his recalculations of observations by Captain Matthew Flinders.
Letter from John Cunningham to the Board of Longitude, 1790-06-05
With an accompanying chart.
Letter from John Cunningham to the Board of Longitude, 1790-03-18 - 1791-03-18
Two letters and an accompanying chart.
Letter from John Daly to Nevil Maskelyne, 1797-01-31
Four letters from Daly, with a copy of a reply from William Wales.
Letter from John Daly to William Wales, 1797-03-14
Enclosing a description of his instrument for ascertaining longitude.
Letter from John Daly to William Wales, 1796-08-30
Four letters from Daly, with a copy of a reply from William Wales.
Letter from John Daly to William Wales, 1797
Four letters from Daly, with a copy of a reply from William Wales.
Letter from John Davies to Dr Thomas Young, 1825-12-12
Providing a description of his instrument.
Letter from John Davies to Dr Thomas Young, 1825-12 - 1826-03
Concerning a letter and description of his instrument which he had previously sent but which had not reached its destination.
Letter from John Davies to Dr Thomas Young, 1826-03-06
Providing a description of his instrument.