Cambridge Digital Library

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1. ▾ Collection
   • Board of Longitude (38)
   • Darwin Manuscripts (1)
   • Longitude Essays (3)
   • National Maritime Museum Manuscripts (4)
   • Papers of Nevil Maskelyne (1)
   • Papers of the Board of Longitude (30)
2. ▾ Subject
   • Astronomy (23)
   • Longitude (10)
   • Chronomoters (9)
   • Clocks and watches (2)
   • Chronometers (1)
   • Marine navigation (1)
3. ▾ Date
   • 1700s C.E. (29)
   • 1800s C.E. (12)