In 1845 American painter and inventor
Rufus M. Porter founded
Scientific American as a four-page weekly newspaper; 10 months later Porter sold the newspaper to American inventor, publisher and patent lawyer
Alfred Ely Beach and publisher
Orson Desaix Munn. The newspaper or magazine always promoted inventions, and it appears that the patent agency associated with the
Scientific American may have been its major profit center.

Jeremy Norman Collection of Images - Creative Commons
Once you got past the title page of the Scientific American reference book it did not mince around with the motivation of its customers, telling them "How to Get Rich" by inventing and patenting inventions through the Munn & Co. agency, of course.

Jeremy Norman Collection of Images - Creative Commons
In the upper portion of this photograph you see an orange trade card from Munn & Co, publishers of Scientific American, advertising their American and European Patent Agency. To the right of that there is the fancy leather sleeve for a patent that the agency obtained for Louis A. Lyon of Shortey's Depot, Alabama, for a railroad car heater with an automatic fire extinguisher. The patent that came in the sleeve is also displayed. (The patent had been folded in the sleeve for so many years that it required heavy blocks to hold it flat for the photograph.)

Jeremy Norman Collection of Images - Creative Commons
The title page of the Scientific American Reference Book included a basic Table of Contents.