Board of Longitude
Found in 6 Collections and/or Records:
Letter and two printed papers on finding the longitude by an altitude of the moon, 1826-06-05
Sent from Thomas Hedgcock to the Board of Longitude.
Letter from Thomas Hedgcock to the Board of Longitude, 1816-02-28
Originally enclosed in the letter to Thomas Hurd at [RGO 14/35: 294-294a].
Letter from Thomas Hedgcock to the Board of Longitude, 1816-09-04
Originally enclosed in the letter to Thomas Hurd at [RGO 14/35: 296-296a].
Letter from Thomas Hedgcock to the Board of Longitude, 1818-05-28
Originally enclosed in the letter to Thomas Hurd at [RGO 14/35: 299-299a].
Letter from Thomas Hedgcock to the Board of Longitude, 1826-09-18
24 letters, with related papers and observations.
Letter from Thomas Hedgcock to the Board of Longitude, 1827-12-03
24 letters, with related papers and observations.
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