John,62Fitts, Rev. James Hill,129Flint, Abel,10,72Folger, Nathaniel,45Peter,40,156,162Walter, Jr.,40,156,162,165Folwell, John,16Footes, Nathaniel,4,5Ford, George,63,156,163,168,170George, II,63,156,163,168,170Fosbrook, W.,31,156,162,169Franklin, Benjamin,40,53,58Franklin Institute,40,89,90,139,153Frizell, John,81Frye, Joseph,90,91,137,138,139Joseph, Jr.,91,137Fryeburg,90,137,138Gardner, Will,40Gatty, Joseph,33,156,162,164,166Gerry, Capt.,27Gilbert, Joseph,80,81Mary,81Gillingham, Harold E.,30,33,59,61,66Gilman, Benjamin C.,34,156,162,166,167Gilmur, Bryan,63,156,164,166,167Gilpin family,54glass and thermometric instruments,53,59,62globes,8,34,35,36,53,131,140,142,143Goddard & Angell,22Godfrey, Thomas,58,59,88,156,164,168Godfrey's quadrant,28Gottesman, Rita S.,33,51,66Gould, John,30,76,156,164,168,170Graham, George,145Grainger, Samuel,6,156,161Greene, Joseph,96Peter,109Greenleaf, Stephen,37,38,157,161,167Greenough, David,86Elizabeth,85Jerusha,85John,85Newman,85Thomas,69,75,85,86,87,88,89,90,92,93,137,138,153,157,160,165,167,169,170Thomas, Dr.,88,89William,86,87,88,89,157,161,170Greenwood, Dr. & Mrs. Arthur,150Isaac, Jr.,38,157,161,167Isaac, Sr.,38,39,157,161Grew, Theophilus,8,157,164Griffith, Nathaniel S.,125Griffith & Bowles,124Gross, Huldah,84Thomas,84Gruchy, Thomas James,87gunnery calipers,40Gurley, W. & L. E.,43,118Gurnet lighthouse,115,116Gutridge, Anna,84Guyol, Philip N.,82Hadley, James,58Hadley quadrant,66,82Hagger, Benjamin King,109,110,111,154,157,160,161,167,170John W.,110Mary,43William Guyse,43,44,72,109,110,139,157,158,164,169William King,109Hall, Andrew,98Stephen,86Halley, Edmond,58Halsie, Hannah,84James, I,4,80,81,157,161Nathaniel,80,84Halsy, Anna,81James, II,75,80,81,82,84,85,154,157,161,167,170John,80,81,82,157,167Joseph,75,80,81,82,83,153,157,161,170Rebecca,80Sarah,80Ham, George,125Hannah,125Henry,125James,65,157,163,164,167,169James, Jr.,66,164,167,169Supply,125William,125Hamilton, Alexander,58,65Hamlin, William,44,45,46,76,157,164,165,167,169Hanks, Benjamin,47,157,160,170Truman,47,157,160,170Harland, Thomas,10,29,30,117,123,157,160,166,170Harvard University,8,26,35,40,41,95,99Hayes, Fanny,49Rutherford B.,49Heckewelder, John,49Heisely, Frederick A.,57,58,61,157,160,163,166,167,170George,57,157,163,166,167,170Helyer, Joseph,94,96Polly,98Henry Ford Museum,107Hicks, Edward,31,32Hannah,31,32Hillman, George,109William,109Hindle, Brooke,8,15,58Hinton, William,66,76,157,163,167Historical Society of Pennsylvania,55Hoadley, Silas,68Hobby, Sir Charles,6Hoff, Catherine,57George,163,166John,57,157Holbecher, John,139Holcomb, Amasa,26,157,162,165,171Holland, Captain,145Hood, Joseph,80Hooker, William,42,157Hooker & Fairman [William Hooker and Gideon Fairman],42,157,162,167Hoopes, Penrose R.,30,45,47,67,117,118,120Hopkins, Joseph,68Houghton, Rowland,27,38,157,161,171Houghton Library,35Hunter, Frederick W.,53Huntington, Gurdon,75,118,120,121,122,154,157,160,162,166,171Hezekiah,120Submit,120Hurd, Nathaniel,106,107Hutzlar, Dr. Donald A.,60hydrometer,28hygrometer,33Independent Journal, or The General Advertiser,53Irving, Washington, ivJacks, James,63,158,165,167,171James, Arthur E.,24Jay, Daniel,30Jayne, John,43,158,162,167,169Jefferson, Thomas,19,24,62Jerome, Chauncey,68Jess, Z.,10Johnson, John,139,146,148Jones, Samuel,135William,135W. & S.,135,137,139Journal of Andrew Ellicott,20,131,132,133,136,142,144,145Keese, Samuel,149Kennard, John,126,129,158,162,166,171Ketterer, Alloysius,61,158,164,166Kiely, Edmond R.,7Kimball, LeRoy E.,8,36Kimmel, Anthony,144,145King, Benjamin, I,37,43,44,109,158,169Benjamin, II,43158162164,167,169Daniel,36,43,158,162,168,169Mary,43Mehitable,43Rufus,43Samuel,43,158,164,168,169King & Hagger [Benjamin King and William Guyse Hagger],43,44,158,164,167,169Kizer, David J.,60Thomas J.,60Knowlton, Mary,43Kugler, Charles,62,76Lamb, A., & Son,29,158,163,168,169,171Anthony,10,28,158,163,164,165,168,169,171John,29,158,163,168,169,171Lane, Gladys R.,45Latrobe, Benjamin,150John H. B.,24Laudonet, Mary,54Leadbeater,22Leake, Isaac Q.,29Lee, Billy,149L'Enfant, Pierre Charles,19LePhillips, Philip,24Lewis, John,7Lawrence,149Leybourn, William,10Library Company of Philadelphia,2122Lloyd, Anna,81loadstones,27,38Loftan, Thomas,150,151Logan, James,58Love, J.,10,72Lovering & Sons, Joseph,98Ludlow, I.,60Lyle, Robert,54,56Lyon, Mrs. Eliza R.,142Madison, James,19Magee, D. F.,63magic lantern,27magnets,63maps,7,53Mariner's Museum,107,108,153Maryland Historical Society,23Maryland Journal and Baltimore Daily Advertiser,21Maskelyne, Nevil,142,146Mason, Charles,24Mason-Dixon Line,19Massachusetts Historical Society,80,82,83,84,86,87,94,96,102,104,109,116,117Massachusetts Magazine,40Matchett's Baltimore Directory,110Mather, Rev. Cotton,82,84Mathews, Catherine Van C.,21Maupertius, de,146Maverick, Jotham,93,94