| 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 |