"South Fork Crooked River". Geographic Names Information System. United States Geological Survey (USGS). November 28, 1980. Retrieved September 3, 2010.
topoquest.com
United States Geological Survey. "United States Topographic Map". Retrieved March 14, 2011. The relevant map quadrangles from mouth to source include Liggett Table, Sand Hollow, G I Ranch, Misery Flat, Hampton, West of Hampton, and Imperial Valley South.