The State of California notes expenditures for the California Militia and "Expeditions Against the Indians", 1850–1859; which makes note of a Pitt River Expedition in 1859 . Ongoing conflicts between settlers and the tribes in the northern counties of California provoked appeals by citizens for the removal of the tribes from the region.
The State of California records expenditures for the California Militia and "Removal Efforts Against Native Americans", 1850–1859; which notes a significant expedition by Pitt River in 1859 . The persistent conflicts between settlers and Native American tribes in northern California's counties led citizens to petition for the relocation of the tribes from the area.