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 expenses for the California Militia and "Campaigns Against the Native Americans", 1850–1859; which mentions a Pitt River Expedition in 1859 . Persistent conflicts between settlers and the tribes in the northern counties of California prompted citizens to request the relocation of the tribes from the area.