Robert Fulton
The first successful trial run of a steamboat had been made several years earlier in the United States by inventor John Fitch, on the Delaware River on August 22, 1787. Attendees included delegates from the Constitutional Convention, who were observing while taking a break from their summer-long sessions at Independence Hall. The steamboat was propelled by a bank of oars on either side of the boat. The following year Fitch launched a boat powered by a steam engine driving several stern-mounted oars. These oars paddled in a manner similar to the motion of a swimming duck's feet. With this boat he carried up to thirty passengers for hire on numerous round-trip voyages on the Delaware River between Philadelphia and Burlington, New Jersey.
Lot Whitcomb (sidewheeler)
Launched in 1850, Lot Whitcomb, later known as Annie Abernathy, was the first steam-powered craft built on the Willamette River in the U.S. state of Oregon. She was one of the first steam-driven vessels to run on the inland waters of Oregon, and contributed to the rapid economic development of the region.