Welcome to the database of early American mechanical drawings. The database currently indexes the entire Old Series and the first 3 issues of the New Series of Scientific American, starting in 1845. For more information about how this site works please refer to the help page. Information about the publication(s) can be found on the history page. Information about this project can be found on the about page.

Please note that this site is a work in progress. You may come across things that are broken or missing. For any site feedback, you can contact us directly with technical questions here, or for administrative information you may contact us here. While we look forward to furthering the project, we ask that you limit your site feedback.