| | PAGE |
| The Franklin Stove, | 10 |
| Franklin's Birthplace, Boston, | 14 |
| Franklin Entering Philadelphia, | 17 |
| The Franklin Penny, | 27 |
| Franklin's Grave, | 43 |
| Robert Fulton, | 46 |
| Birthplace of Robert Fulton, | 48 |
| Fulton Blowing Up a Danish Brig, | 53 |
| John Fitch's Steamboat at Philadelphia, | 56 |
| Fulton's First Experiment with Paddle-wheels, | 57 |
| The "Demologos," or "Fulton the First," | 65 |
| The Clermont, | 68 |
| Eli Whitney, | 70 |
| Whitney Watching the Cotton-Gin, | 75 |
| The Cotton-Gin, | 78 |
| Elias Howe, | 100 |
| Birthplace of S.F.B. Morse, Built 1775, | 111 |
| S.F.B. Morse, | 113 |
| Under Side of a Modern Switchboard, showing 2,000 Wires, | 121 |
| The First Telegraph Instrument, as Exhibited in 1837 by Morse, | 125 |
| The Modern Morse Telegraph, | 127 |
| Morse Making his own Instrument, | 129 |
| Train Telegraph—the Message Transmitted by Induction from the Moving Train to the Single Wire, | 131 |
| Interior of a Car on the Lehigh Valley Railroad, showing the Method of Operating the Train Telegraph, | 132 |
| Diagram showing the Method of Telegraphing from a Moving Train by Induction, | 134 |
| Morse in his Study, | 139 |
| The Siphon Recorder for Receiving Cable Messages—Office of the Commercial Cable Company, 1 Broad Street, New York, | 146 |
| No. 5 West Twenty-second Street, New York, where Morse Lived for Many Years and Died, | 151 |
| Calenders Heated Internally by Steam, for Spreading India Rubber into Sheets or upon Cloth, called the "Chaffee Machine," | 164 |
| Charles Goodyear's Exhibition of Hard India-rubber Goods at the Crystal Palace, Sydenham, England, | 169 |
| Council Medal of the Exhibition, 1851, | 173 |
| Grande Medaille d'Honneur, Exposition Universelle de 1855, | 176 |
| John Ericsson's Birthplace and Monument, | 180 |
| The Novelty Locomotive, built by Ericsson to compete with Stephenson's Rocket, 1829, | 184 |
| Ericsson on his Arrival in England, aged Twenty-three, | 186 |
| Mrs. John Ericsson, née Amelia Byam, | 187 |
| Exterior View of Ericsson's House, No. 36 Beach Street, New York, 1890, | 189 |
| Solar-engine Adapted to the Use of Hot Air, | 191 |
| Sectional View of Monitor through Turret and Pilot-house, | 198 |
| The Original Monitor, | 199 |
| Fac-simile of a Pencil Sketch by Ericsson giving a Transverse Section of his Original Monitor Plan, with a Longitudinal Section drawn over it, | 201 |
| Interior of the Destroyer, Looking toward the Bow, | 202 |
| Development of the Monitor Idea, | 204 |
| The Room in Which Ericsson Worked for More than Twenty Years, | 206 |
| Farm where Cyrus H. McCormick was Born and Raised, | 209 |
| Exterior of the Blacksmith Shop where the First Reaper was Built, | 212 |
| Interior of the Blacksmith Shop where the First Reaper was Built, | 215 |
| The First Reaper, | 217 |
| Edison's Paper Carbon Lamp, | 224 |
| Edison Listening to his Phonograph, | 227 |
| From Edison's Newspaper, the "Grand Trunk Herald," | 230 |
| Edison's Tinfoil Phonograph—the First Practical Machine, | 237 |
| Vote Recorder—Edison's First Patented Invention, | 243 |
| Edison's Menlo Park Electric Locomotive (1880), | 250 |
| The Home of Thomas A. Edison, | 257 |
| Edison's Laboratory, | 258 |
| Library at Edison's Laboratory, | 262 |
| Alvan Clark, | 276 |
| C.L. Sholes, | 286 |
| B.B. Hotchkiss, | 288 |
| Charles F. Brush, | 290 |
| Rudolph Eickemeyer, | 294 |
| George Westinghouse, Jr., | 296 |
