Found in 7 Collections and/or Records:
Copy of a letter from Thomas Hurd to William J. Titford, 1814-03-05
Concerning a chart for finding longitude and a method of finding longitude by two proportional quadrants. Includes a letter of recommendation from the passengers and crew of HMS York where Titford's chart for longitude was tested on a voyage to Jamaica in 1813, as well as latitude and longitude figures from a voyage of HMS Mary Ann to Jamaica in 1822.
Letter from officers and passengers of HMS York, 1813-06-14
Testifying that a method for ascertaining longitude was invented and tested by William Titford on a voyage of HMS York from England to Jamaica, between 22 April and 14 June 1813.
Letter from William Titford about forwarding communications, 1823-01-01
Sent to Dr Thomas Young.
Letter from William Titford to Dr Thomas Young, 1822-07-30
Originally enclosing papers and charts for finding longitude.
Letters from observatories, 1864 - 1869
Method of using a chart for finding longitude at sea, 1813-07-19
As tested on HMS York.