Abbott, Katherine M.,98Adams, Augustus,99Adams, George,131,134,136Allen, John Johnson,148almanac,22,24,25American Antiquarian Society,38,112American Philosophical Society,11,12,16,21,22,24Amherst College,26Annals of Salem,43Antiques,43,45apparatus, scientific teaching,3astronomical observatory,15,24Atwell, George,10backstaff,58,96,139Backus, Ebenezer,120Bailey, Calvin,39Bailey, John,39,51,155,162,169,170John II,39,155,161,170Lebbeus,39Baily, Joel,21,22,24,155,164Baldwin, Jabes,123Jedidiah,123,124,154,155,160,162,170Jeduthan,94Ballard, Mehitable,109,110Samuel,109William,109,110Baltimore American & Commercial Advertiser,110Banks, Sir Joseph,140Banneker, Benjamin,22,23,24,25,155,160Barclay, Thomas,146Bardin, W. & T. M.,131,141,142,143barometer,31,32,33Bassett, Preston R.,74,75,153Bedini, Silvio A.,29,113Banneker's...Almanac and Ephemeris,For...179,24,25Bennet, N.,131Benson, John,28,155,169Bentley, William,36,37Bethune, Nathaniel,87Biddle, Owen,21,22,24,155,163Biggs, Thomas,59,155,162,163,170Bion, Nicolas,10Blakslee, Ziba,47,155,160,170Blundy, Charles,29,155,165,166Boston Annual Advertiser,99Boston Evening Post,27Boston Gazette, The,6,27,38,39,40,82,87,95,105Bostonian Society,42,77,78,79,99,100,101,105,153Bouchette, Col.,146,148boundsgoer,7Bowdoin, James,81,86Bowles, Hannah,124Samuel,124Thomas Salter,75,124,125,126,127,129,153,154,155,162,170Braddock, Gen.,149Bradley, Abiah Emerly,125Brainard, Newton C.,5,6Breed, Aaron,75,107,153,155,160,170Brewington, M. V.,85Brewster, Charles W.,125Bridenbaugh, Carl,29,53Brigham, Clarence S.,38,97Brighton, Ray,124Brokaw, Isaac,53,155,163Brown, Benjamin,94,96Sam,102,104Brown University,26Bucks County Historical Society,90,153Bulmain & Dennies,51,155,162,168Burges, Bartholomew,40,155,160Burnap, Daniel,69,117,118,119,155,160,166,170Cabot, Mrs. H. Ropes, ixcamera obscura,28Campbell, Colin,146Cape Henlopen,21,22,24,58Carey, W.,51Caritat, H.,51,155,162,165Carter, Henry,28Chandlee, Benjamin, Jr.,54,155,161,166,170Benjamin, Sr.,54Edward E.,55Ellis,55,155,161,166,170Ellis, & Bros.,54,55,155,161,170Goldsmith,54,55,56,57,155,165,166,170Isaac,55,59,155,161,170John,55Chandlee & Bros. [John and Isaac Chandlee],161,166,170Chandlee [Benjamin, Jr.] & Sons,54Chapin, Howard M.,43,44,45Charleston Evening Gazette,31Cheney, Benjamin,67Chester County Historical Society,24,31,32,54,55Chronicle[E.A.I.A.],6Churchill, Frank C.,126,129Clark, Robert,31,165,168,169,170William,152Clark County Historical Society,60Clarke, Martha,85Sarah,85William,85clockmaker,10,11,15,16,19,21,24,29,30,31,34,39,40,45,47,49,54,57,59,62,63,67,117,118,123,124,125,129,146Clough, Jere,75,105,154,155,161,170Joseph,99,105Cohen, I. Bernard,40Cole, Benjamin,149,150Collison, Peter,58Columbia Centinel,98,99compass,53,54,63,152compass card,75,76,82,83,90,92,102,104,106,107,113,115Comstock Memorial Collection,139Condorcet, Marquis de,24Condy, Benjamin,59,155,163,167,168Connecticut Courant,47Connecticut Gazette,120,121Connecticut Historical Society,5,6,93,118,119,121Connecticut Journal,45Conrad, Henry C.,54Cosgrove, James,7Cotes, Roger,149Crittenden, A. R.,139Crockett, Roberson,87Crow, George,54,155,160,166,170Curtis, Charles B.,134Cushing, A. T.,101S. T.,99,101Custis, George Washington Parke,144Dabney, John, Jr.,27,156,161,167Dakin, Jonathan,38,76,156,161,167Dartmouth College,26,36,72,124Museum,70,71,72,126,129,153Davenport, Michael,61William,61,156,164,167,168,170Davis, William T.,113Davis quadrant,13,37,44,58,66,92,97,139Day, J.,10Dean, William,60,61,156,164,168,170Denegan, John,33De Negani,33Devacht, Francois,49,156,163,166Joseph,49,156,163,166Dewie, Captain Solomon,118dialing rule,4,5Diary, or Evening Register,33Dinwiddie, Gov.,150Dix, John Ross,34Dixon, Jeremiah,24Donegan, [or Denegan] John,33,156,162,166Donegany, Joseph,33,156,162,166Donnel, Henry,60Jonathan,60,61Doolittle, Amos,36Enos,47,156,160,166,168,170Isaac,45,47,156,160,166,167Isaac, Jr.,45,156,160,166,170Dorsan, Sarah Halsy,80,81Dougherty, John,60,61Douglass, Andrew Ellicott,134,136,145David Bates,134Henry B.,142Dow, George Francis,106Draper, Murray & Fairman,43Dring, Jeptha,31Thomas,31,32Duffield, Edward,62Dunglison, Dr.,62Dupee, Isaac,105John,69,75,104,105,153,154,156,161,170Duvall, Samuel,144,145Dyherty, John,60Early American Industries Association,6,89Eckhardt, George H.,15,62,63Eichner, Laurits C.,90,91,137,138,153Eldridge, Elizabeth,80Joseph,80Ellicott, Andrew,18,19,20,22,24,62,131,132,133,134,135,137,139,142,144,145,147,156,160,165,170Charles,134George,22,23Jane Judith,134Joseph,19,22Ellicotts Mills,19,21Ellis, Mary N.,137Orange Warner,137,138Emery, Samuel,43,156,164,167,168Endicott, John,84equal altitude instrument,20Evans, David,146George,31,62,156,163,167Ewer, Sarah,129Fairchild, Adah,49Fairman, Gideon,42,156,157,162,167,168(see also Hooker and Fairman)Farmer's Museum,73,153Felt, Joseph B.,43,94Ferguson, James,22Fisher, Joshua,58Martin,62,156,164,166Fitch, Eunice,98