| Volume 1 | Scientific American | Number 6. | ||
 Most numerous are the inventions lost to the world for ages, and many doubtless to this day because inventors, being poor, could not bring them out. To remedy this evil to some extent, the following plan is suggested. |
|
List of Agents | ||
| Rare Project | Sterotyping and Printing |
 |
 Henry Round Tree |
|
| Daguerreotype | ||||
| Worthy Attention |  |
Patent Galvanic Rings |
||
| Adams & Co. Express | ||||
| J.M. Dollan | Benidict & Son | John Brown | Scythe Stones | |
| A.G. Bagley's | American Institute Fair | Daguerreotype | Adams & Co.'s | |
| Allen Street | J.B. Carey & Co | Beebee & Costar | John Westall & Co | |