An Account of the Latitude of Constantinople, and Rhodes, Written by the Learned Mr John Greaves, Sometime Professor of Astronomy in the University of Oxford, and Directed to the Most Reverend James Ussher, Arch-Bishop of Armagh J. Greaves
The Description and Use of an Instrument for Taking the Latitude of a Place at Any Time of the Day; By Mr. Richard Graham, F. R. S. R. Graham
An Expeditious Method of finding the Latitude by simply observing the Azimuthal Angles of two Circumpolar Stars with a Theodolite M. Babinet