The final series of the collection is comprised of notes, observations and computations on graph paper as well as two hard-cover bound student project reports. About half of the graph paper records are marked as the charts of the "Lick Eros Plates" and represent a collaborative effort with the Lick Observatory in California. Some correspondence regarding this collaboration can be found in Box 2 Folder 7. This series also includes 5 bound ledger books with computations on the Rutherfurd plates as well as from observations at Bloomingdale Station/116th Street from 1893 to 1901.
Box 4 Folder 21
1896
Box 4 Folder 22
1896, undated, 1896, undated
Box 4 Folder 23
1896-1897
Box 5 Folder 1
1897
Box 5 Folder 2
1899
Box 5 Folder 3
1899
Box 5 Folder 4
1903
Box 5 Folder 5
"Lick Eros Plates,", 1900-1901
Box 5 Folder 6
"Lick Eros Plates,", 1900-1901
Box 5 Folder 7
"Lick Eros Plates,", 1901
Box 5 Folder 8
"Lick Eros Plates,", 1901
Box 5 Folder 9
"Lick Eros Plates," 1901, undated, 1901, undated
Box 5 Folder 10
"Lick Eros Plates," approximately, 1901-1903
Box 5 Folder 11
"Lick Eros Plates," approximately, 1901-1903
Box 5 Folder 12
"Lick Eros Plates,", 1902-1903
Box 5 Folder 13
"Lick Eros Plates,", 1903
Box 6 Folder 1
Camp Columbia, Scattered Reports and Charts, 1908-1911
Box 6 Folder 2
"Detailed Report on Geodetic Surveying," Camp Columbia, 1912
Box 6 Folder 3
"Detailed Report: Geodesy and Astronomy," Camp Columbia, 1917
Box 7 Folder 1
Zenith Telescope, Variation of Latitude Investigation, volume 2, 1893-1899
Definitive investigation of the periodic errors of the Zenith telescope screw, 1896. Computations by F.E. Harpham under the direction of Harold Jacoby. Includes additional computations by J.K. Rees and H.S. Davis.
Box 7 Folder 3
Zenith Telescope, Variation of Latitude Investigation, volume 3, 1893-1900
Latitude observations, variation of latitude pairs, and reduction to apparent place.
Box 7 Folder 4
Elongations and Transits, 1893-1894
Computations by J.K. Rees and Harold Jacoby, from Bloomingdale Station / 116th Street with the Zenith telescope.
Box 7 Folder 2
Rutherfurd Photographic Measures, Plates XIV-XVIII, Volume 2 , 1901
Box 4 Folder 24
Computation for all stars in the Yale measures; refraction tables; computations for checking distances and position angles of the Pleiades Plates, circa 1891
Computers Harold Jacoby, James McRichard and F.E. Hurley