In the latter half of the 19th century, manufacturing was the mainstay of the city's economy, especially finely made metal parts, such as marine hardware (Wilcox, Crittendon & Co.) and typewriters (Royal Typewriters). There were also several machine tool & die manufacturers in the city. Middletown was the site of a major unit of Goodyear. In addition, there was the pioneer automobile manufacturer Eisenhuth Horseless Vehicle Company. Other manufacturers included in national expositions and now museum collections include the Middletown Plate Company (silver), Middletown Silver Co. and I. E. Palmer (hammocks).