 "The Lot Whitcomb" was launched on 25 December 1850.Kamm and John C. Ainsworth joined with Abernathy and Clark, merchants from Oregon City, in 1854 or 1855 to build the "Jenny Clark", a sternwheeler on the Willamette.Kamm owned half of the "Jenny Clark", Ainsworth owned a quarter, and Abernathy and Clark shared the remaining quarter.