Samuel,94Mayer'sTables,22McCabe, William,49McHenry, James,22Memoirs of the Academy of Arts and Sciences,40Mendenhall, Thomas,63,158,163,166,168Mercer Museum,90,153Merrill, P., Esq.,126,129Miller, Aaron,53,158,162,166,171Mirick, McAndrew,87Mitchell, Edwin Valentine,36Maria,40Moore, S.,10Moor's Indian Charity School,72Morey, John,113Morris, M.,53,158,163Morton, Charles,82,83Mount Vernon,54,57,144Mount Vernon Ladies Association of the Union,57Nantucket,40National Maritime Museum,150Newell, Andrew,106,107,154,158,161,168,169,171Charles,107,161Joseph,107,161New Hampshire Historical Society,81,82,153New York Daily Advertiser,28,33,53New York Gazette,28,51,53,66New York Historical Society,33,39,66New York Mercury,66New York Packet,29,51,53Noble, James,81Norwich Courier,30Norwood, R.,10Odell,146Ohio Historical Society,55,61Ohio State Museum,16,51,52,55,59,60,61Old Sturbridge,90,107,153optical instruments,26,28orrery,15,16,39,40,41Osborn, John,96Paine, Robert Treat,82Thomas,82,83Palmer, Brooks,39,47,63,123Parker, N.,153Parmele, Ebenezer,67Partridge, Marty,81Paul, Amos,129Temple,129Peabody Museum,85,96,97,139,153Peale, Charles Wilson,14Pease, Elizabeth Folger,45Paul,45,158,164,169Pell, Edward,84Pemberton, James,30Pennsylvania Evening Herald,33Pennsylvania Magazine,30Pennsylvania Packet, The,15Pennsylvania, University of,8,15,16perpetual log,51Phillips, John M.,107Jonathan,99Mrs. Mary W., ixPierce, Abner,139Pierpont, John,68Pitt, William,24Pitts, James,86planetarium,36planisphere,51Platt, Adah,49Augustus,49,52,158,163,168,171Benjamin,49,51,158,160,162,163,167,171William Augustus,49Plymouth Journal & Massachusetts Advertiser,112,113Pope, Joseph,39,41,158,161,167Potter, John,43,158,161,171Potts, Thomas,12W. L.,158,163Power, Alexander,7Price, Derek J. de Solla, ix,3,130Priestley, Frances D.,140,142Dr. Joseph,131,140,141,143Prime, Alfred Coxe,29,31,63Prince, John,24,158,161,162Nathan,8,158Princeton University,15Pryor, Thomas,59,159,164,168Quincy, Abraham,96Rathborne, Aaron,9,10Ratsey, Widow,65Revere, Paul,38,39,40,41,42,97,113,116,117,159,161,168Reynolds, John E.,131,134William,134Reworth, Captain,87Rhode Island Historical Society,45,46,139Riley, Stephen T., ixRitchie & Co., Bern C.,139Rittenhouse, Benjamin,11,15,16,142,144,159,164,165,171David,11,12,14,15,16,20,21,47,62,142,144,145,146,147,159,163,164,165,171Rittenhouse & Evans [David Rittenhouse & David Evans],139,146,148,159,171Roberts, Gideon,67Nathaniel,85Romaine, Lawrence,88Royal Pennsylvania Gazette,59Royal Society of London,58Rutgers University,26Salter, Titus,124sand glasses,59Savage, James,4,80,84Schiff, Henry G.,107Schoen, H. H.,7Seybold, R. F.,7Shampeny, Worth,153Shepley Library,139Sheppard, Jack,29Shillcock, Hannah,94Joyce,94Robert,93Shoemaker, Mrs. Francis D.,140Shrimpton, Shute,87Sibley, Asa,120,121Sibley & Marble [Clark Sibley and Simeon Marble],47,159,160,167,168Sign of the Cross-Knives and Gun, At the,53,76Sign of "Hadley's Quadrant," At the,66,76Sign of the Hand & Beam, At the,38,76Sign of the Mathematical Instruments, At the,43Sign of the Quadrant, At the,30,45,76,107Sign of the Seven Stars, At the,62,76Sission, Jonathan,27Skillin, John,77,78,79Simeon,39,41,78Sloane, Sir Hans,58Smart, C. E., ix,118Smith, Cordial,159,160Society for the Promotion of Useful Arts of Albany,21Solebury,19Sommer, Widow Balthaser,28,159,163,169South Natick Historical Society,104,153Sower, Christopher,63,159,163,164,167,168Stargazers' Stone,24Steele, A.P.,60,61Stevenson, D. Alan,115Stiles & Storrs [Nathan Storrs and Jedidiah Baldwin],123,159,162,171Stiles & Baldwin [Jedidiah Baldwin],123,159,162,171Stimpson, Charles Jr.,99Stoddard, Sarah,86Stone, Edmund,10Storrs, Nathan,123Streeter Collection of Weights and Measures [Yale University],105,114,115,117,125,126,153Stretch, Carolyn Wood,63Struik, Dirk J.,26Stubbs, Roleigh L.72,153sundial,4,38,49,54,149surgical instruments,31,47,51,53,54Sutton, Henry,4Swan, Joseph,139Symes, Jno. C.,60Taws, Charles,61,159,164,168Taylor, E. G. R.,67telescope,11,21,40,45,54,60,62,64,136,137,148,149,150Terry, Eli,117Thacher, Charles,107,108,153,159,161,171Thaxter, Bathsheba,97Samuel,69,75,76,77,78,79,97,98,99,101,102,104,154,159,161,168,169,171Samuel, Sr.,98Thomas,98Thaxter & Son, S.,103theodolite,38,52,64,137,138thermometer,28,29,33Thomas, Richard,22Thompson, George Andrews,148Samuel Rowland,148"Thwing Catalogue,"80,82,84,86,94,96,109Todd, Eli,49Towle, Jeremiah,129trade cards,46,100trade signs,30,38,43,45,53,62,66,75,76,77,78,79,96,99,101,107(see also under Sign)transit of Venus,11,15,16,21,22,24,59Turner, Charles Jr.,146Tyler, Thomas,105Union College,26United States National Archives,116United States National Museum,15,57,62,90,91,134,139,140,144,149Van Ness, Cornelius P.,146Vassar College,40Voight, Henry,62,64,148,159,164,165,167Wall, George, Jr.,63,159,163,171Wallis, Thomas,109Walpole, Charles,28,159,163,168Walton, Joseph,125Warren, Benjamin,75,112,114,115,116,154,159,162,169,171William L.,6Washington, George, iv,19,54,62,63,142,144,145,149,150,151Lawrence Augustine,54,57weather glass,33Welles, Arnold,94Wienberger, Bernard W.,38Wheelock, Rev. Eleazar,70,72Whipple Museum,150White, John,85Peregrine,47,48,150,159,160,167,171Whiting, Alfred F.,126Whitney, John,30,159,164,168,169Thomas,30,152,159,168,169,171William & Mary College,150Williams, John,93Marvin,120Samuel,26Temperance,120