Primary Source Documents-Survey Plat
Survey Plat for Township 1N, Range 10W,
San Bernardino Baseline & Meridian
This map is an example of the ones produced by surveyors in accordance with Thomas Jefferson's Rectangular Survey System. The Los Angeles land office used this map until the mid-twentieth century to note when parcels of land were sold to private owners or retained by the Government for public use.
Citation: Record Group 49, Records of the Bureau of Land Management, Los Angeles Land Office. Survey Plats -- San Bernardino Baseline and Meridian, Township 1 North, Range 10 West. Held by the National Archives & Records Administration -- Pacific Region (Riverside).