Appendix 1. Cartographic Resources Used to Inform Historical Wetland Mapping .

Baker, G. H., et al, U.S. District Court, Southern District, 187-? Map of a portion of Los Angeles County: showing the "Abel Stearns ranches," La Habra, Los Coyotes, San Juan Cajon, Las Bolsas, La Bolsa Chica [Calif.] Land case 88 SD, page 864; Land case map E-1065. [ca. 1:158,400] Land Grants. Courtesy of The Bancroft Library, UC Berkeley.

Beck, W. A., and Y. D. Haase, 1974. Historical Atlas of California. University of Oklahoma Press, Norman.

Bolton, H. E., 1971 [1927]. Fray Juan Crespi: Missionary Explorer on the Pacific coast 1769-1774. AMS Press, New York.

Burchard, R. W. and W.R. Chenoweth, U.S. Geological Survey (USGS), 1940. Valyermo Quadrangle, California: 6-minute series (Topographic); 1:24,000; Polyconic Projection. Washington, D.C. Courtesy of Alexandria Digital Library, University of California, Santa Barbara.

California State Engineering, 1880. Los Angeles County Topographic Map. Courtesy of The David Rumsey Collection.

Chase, A.,U.S. Coast Survey (USCS), 1872. Coast East of San Pedro Bay, California: T-1283. Washington D.C., 1:10,000 Courtesy of National Oceanic and Atmospheric Administration.

Chase, A., U.S. Coast Survey (USCS), 1875. Topography: New River to Bolsas Creek, California: T-1345, Washington D.C., 1:10,000 Courtesy of National Oceanic and Atmospheric Administration.

Clark, A., 1970. The San Gabriel River: a century of dividing the waters. Southern California Quarterly52(2):155-169.

Dalton, R. P., 1935. Rio Hondo (San Gabriel River) information for City of El Monte. County of Los Angeles. Courtesy of Pio Pico State Historical Park.

Dunn, J. E., L. C. Holmes, et al., 1921. Reconnaissance soil survey of the central southern area, California. Government Printing Office, Washington D.C.Courtesy of National Resource Conservation Service, Lancaster.

Ecklund, C. A., U.S. Geological Survey (USGS), 1925. Long Beach Quadrangle, California 6 minute series(Topographic);1:24,000; Polyconic projection. Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

Ecklund, C. A., U.S. Geological Survey (USGS), 1942 (reproduced by the U.S. Army). Los Angeles Quadrangle, California: 6-minute series (Topographic). 1:24,000; Polyconic projection. Washington, D.C. Courtesy of Alexandria Digital Library, University of California, Santa Barbara.

Ecklund, C. A., U.S. Geological Survey (USGS), 1931 (reprint). Los Angeles Quadrangle, California: 6-minute series (Topographic). 1:24,000; Polyconic projection. Washington, D.C.Courtesy of Alexandria Digital Library, University of California, Santa Barbara.

Ecklund, C. A., U.S. Geological Survey (USGS), 1928. Los Angeles Quadrangle, California: 6-minute series (Topographic);1:24,000; Polyconic projection. Washington, D.C.Courtesy of Alexandria Digital Library, University of California, Santa Barbara.

Ecklund, C. A., F.K. Van Zandt, U.S. Geological Survey (USGS), 1939. Mt. Wilson Quadrangle, California: 6-minute series (Topographic);1:24,000; Polyconic projection. Washington, D.C.Courtesy of Alexandria Digital Library, University of California, Santa Barbara.

Ecklund, C. A., R.W. Burchard, U.S. Geological Survey (USGS), 1941. Waterman Mountain Quadrangle, California: 6-minute series (Topographic);1:24,000; Polyconic projection. Washington, D.C. Courtesy of Alexandria Digital Library, University of California, Santa Barbara.

Ecklund, C. A., U.S. Geological Survey (USGS), 1925. Whittier Quadrangle, California: 6-minute series (Topographic). 1:24,000; Polyconic projection. Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

Eckmann, E. C., and C. J. Zinn, 1917. Soil survey of the Pasadena area, California. U.S. Department of Agriculture, Government Printing Office.Courtesy of California State University, Northridge.

Gannett, H., R.U. Goode, U.S. Geological Survey (USGS), 1893. Downey Quadrangle, California: 15-minute series (Topographic). 1:62,500; Polyconic projection. Washington, D.C. Courtesy of California State University, Northridge.

Gannett, H., R.U. Goode, U.S. Geological Survey(USGS), 1894. Pomona Quadrangle, California: 15-minute series (Topographic). 1:62,500; Polyconic projection. Washington, D.C. Courtesy of California State University, Northridge.

Gannett, H., R.U. Goode, U.S. Geological Survey (USGS), 1896. Redondo Sheet, California: 15-minute series (Topographic). 1:62,500; Polyconic projection.Washington, D.C.Courtesy of California State University, Northridge.

Gannett, H., R.U. Goode, U.S. Geological Survey (USGS), 1900. Pasadena Sheet, California: 15-minute series (Topographic). 1:62,500; Polyconic projection.Washington, D.C. Courtesy of California State University, Chico.

General Land Office, 1867. Rancho Los Cerritos, confirmed to Juan Temple. p. 68-82.Courtesy of Bureau of Land Management, Sacramento, CA.

Glover, E. S., 1877. Bird's Eye View of Los Angeles. E.S. Glover for the Library of Congress. Washington, D.C.

Guinn, J. M., 1890. Flood: San Gabriel River 1867-68. Publications of the Historical Society of Southern California 1(3):33-39.

Hall, W.H. circa 1886. Draft irrigation maps for “Irrigation in California (Southern): the field, water-supply, and works, organization and operation in San Diego, San Bernardino, and Los Angeles Counties: The second part of the report of the state engineer of California on irrigation and the irrigation question.” Courtesy of Huntington Library, San Marino, CA.

Hall, W. H., 1888. Irrigation in California (Southern): the field, water-supply, and works, organization and operation in San Diego, San Bernardino, and Los Angeles Counties: The second part of the report of the state engineer of California on irrigation and the irrigation question. State Printing Office, Sacramento. Courtesy of Huntington Library, San Marino, CA.

Hancock, H., 1857. Field Notes of the Final Survey of the Rancho La Puente; Workman and Roland, Confirmee.Bureau of Land Management, Sacramento, CA.

Hancock, H.,1858. Plat of the Azusa Rancho finally confirmed to Andreas Duarte [Los Angeles Co., Calif.). 40 chs. to 1 in. variation 13 30' E. U.S. Surveyor General's Office, San Francisco, CA.Courtesy of The Bancroft Library, UC Berkeley.

Hancock, H., 1866. Plat of the Part of the Rancho Paso de Bartolo finally confirmed to Bernardino Guirado (Los Angeles Co., Calif.). 20 chains to 1 inch; variation 13 20' E U.S. Survey General's Office, San Francisco, CA. Courtesy of The Bancroft Library, UC Berkeley.

Hancock, H., 1876. Field Notes of the Rancho Azusa as confirmed to Henry Dalton and as confirmed to A. Duarte. Bureau of Land Management, Sacramento, CA p. 124-132.

Hansen, G. U.S. District Court, Southern District, 1864? [Sketch of the Rancho Santa Gertrudes / Geo. Hansen] Land case 193 SD, page 83; land case map B-1212.[ca. 1:33,000]. Courtesy of The Bancroft Library, UC Berkeley.

Hoffmann, C. F., , 1870. Field Notes of the Final Survey of the Rancho Santa Gertrudes, part of; McFarland and Downey, Confirmee. 279. p. 124-131.Bureau of Land Management, Sacramento, CA.

Hoffmann, C. F., 1873. Field Notes of Rancho "Los Coyotes". 673(?). p. 96-103.Bureau of Land Management, Sacramento, CA.

Jones, A., U.S. Geological Survey (USGS), 1948. El Monte Quadrangle, California: 6-minute series (Topographic). 1:24,000; Polyconic projection. Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

McDonald, H. L., U.S. Geological Survey (USGS), 1923. Artesia Quadrangle, California: 6-minute series (Topographic). 1:24,000; Polyconic projection. Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

McDonald, H. L., U.S. Geological Survey (USGS), 1925. Clearwater Quadrangle, California: 6-minute series (Topographic). 1:24,000; Polyconic projection. Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

McDonald, H. L., U.S. Geological Survey (USGS), 1927. Puente Quadrangle, California: 6-minute series (Topographic). 1:24,000; Polyconic projection; Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

McDonald, H. L., U.S. Geological Survey (USGS), 1932. Clearwater Quadrangle, California: 6-minute series (Topographic). 1:24,000; Polyconic projection. Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

McDonald, H. L., U.S. Geological Survey (USGS) reproduced by U.S. Army Map Service, 1942. Artesia Quadangle, California: 6-minute series (Topographic).1:24,000; Polyconic projection.Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

McDonald, H. L., U.S. Geological Survey (USGS), 1945. Artesia Quadangle, California: 6-minute series (Topographic).1:24,000; Polyconic projection.Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

McDonald, H. L. t., J.E. Rockhold (county surveyor), U.S. Geological Survey (USGS), 1923. Artesia Quadangle, California: 6-minute series (Topographic).1:24,000; Polyconic projection.Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

McDonald, H. L. t., J.E. Rockhold (county surveyor), U.S. Geological Survey (USGS), 1925. Artesia Quadangle, California: 6-minute series (Topographic).1:24,000; Polyconic projection.Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

Morse, D. D., 1893. View of San Gabriel, CA. [Oblique aerial drawing] Courtesy of The David Rumsey Collection.

Nessler, C. W. H., U.S. Geological Survey (USGS), 1925. Glendora Quadrangle, California: 6-minute series (Topographic). 1:24,000; Polyconic projection. Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

Nessler, C. W. H., U.S. Geological Survey (USGS), 1926. El Monte Quadrangle, California: 6-minute series (Topographic).1:24,000; Polyconic projection. Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

Nessler, C. W. H., U.S. Geological Survey (USGS),1927. Glendora Quadrangle, California: 6-minute series (Topographic). 1:24,000; Polyconic projection. Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

Nessler, C. W. H., U.S. Geological Survey (USGS), 1932. El Monte Quadrangle, California: 6-minute series (Topographic). 1:24,000 ; Polyconic projection. Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

Nessler, C. W. H., U.S. Geological Survey (USGS).1939. Glendora Quadrangle, California: 6-minute series (Topographic). 1:24,000; Polyconic projection. Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

Nessler, C. W. H., F.K. Van Zandt, U.S. Geological Survey (USGS), 1940. Mescal Creek Quadrangle, California: 6-minute series (Topographic). 1:24,000; Polyconic projection. Washington, D.C. Courtesy of Alexandria Digital Library, University of California, Santa Barbara.

Norway, W. H., George Hansen (surveyors), U.S. Surveyor General's Office, 1866. Plat of the Rancho San Francisquito finally confirmed to Henry Dalton [Los Angeles Co., Calif.]40 chs. to 1 inch; variation 13 40' to 13 45'E.Courtesy of The Bancroft Library, UC Berkeley.

Rhodes, H. H., US Coast and Geodetic Survey, 1893. Santa Monica Bay, California: T-3086. 1:40,000 Courtesy of National Oceanic and Atmospheric Administration.

Rhodes, H. H., US Coast and Geodetic Survey, 1909. Wilmington and San Pedro Harbors, California: T-3099. 1:40,000.Washington, D.C. Courtesy of National Oceanic and Atmospheric Administration.

Rockhold, J. E., U.S. Geological Survey (USGS), 1923. El Monte Quadrangle, California: 6-minute series (Topographic); 1:24,000; Polyconic projection. Washington, D.C. Courtesy of Davidson Library, University of California, Santa Barbara.

Samuel Carpenter, C., U.S. District Court. California, Southern District, 1846. [Diseño del Rancho Santa Gertrudes: Calif.] Land Case Map 272. Courtesy of The Bancroft Library, UC Berkeley.

Stearns, A., United States. District Court. California, Southern District. 1835.Diseño del parage llamado : [Rancho Paso de Bartolo Viejo] / [por Abel Stearns] Land case. 87 Land Grants. Courtesy of The Bancroft Library, UC Berkeley.

Terrell, J. E., General Land Office, 1860. Field Notes of the Obsolete Survey of the Rancho Santa Gertrude, Part of; McFarland and Downey, Confirmee. 281. p. 470-475.Bureau of Land Management, Sacramento, CA.

Thompson, G. H., U.S. District Court, Southern District of California, 1866. Plat of the Rancho Paso de Bartolo finally confirmed to Pio Pico and Juan Perez [Los Angeles Co., Calif] 40 chs. to 1 in.; variation 13 30' E.Courtesy of The Bancroft Library, UC Berkeley.

Thompson, G. H., General Land Office, 1882. Field Notes of the survey of the Rancho Paso de Bartolo Viejo; Pio Pico, Confirmee. 278. p. 197-208.Bureau of Land Management, Sacramento, CA.

U.S. Geological Survey (USGS), 1925. Azusa Quadrangle, California: 15 minute series (Topographic); 1;24,000; Polyconic projection. Washington, D.C., Courtesy of Davidson Library, University of California, Santa Barbara.

U.S. Geological Survey (USGS), 1928. Azusa Quadrangle, California: 6-minute series (Topographic); 1:24,000; Polyconic projection. Washington, D.C.Courtesy of Davidson Library, University of California, Santa Barbara.

U.S. Geological Survey (USGS), 1923. Bell Quadrangle, California: 7.5-minute series (Topographic); 1:24,000; Polyconic Projection. Washington, D.C., Courtesy of Davidson Library, University of California, Santa Barbara.

U.S. Geological Survey (USGS), 1925. Bell Quadrangle, California: 6-minute series (Topographic); 1:24,000; Polyconic projection. Washington, D.C., Courtesy of Davidson Library, University of California, Santa Barbara.

U.S. District Court, Southern District, 1834. [Diseño de los parages llamados Sta. Gertrudes, Coyotes, Bolsas, Alamitos y Sierritos, Calif.] Land Case Map D-971. Land case 17 SD, page 191. [Orange and Los Angeles Counties, Calif.] Land Grants. Courtesy of The Bancroft Library, UC Berkeley.

U.S. District Court, Southern District, 1846?. [Diseño del Rancho Santa Gertrudis, Calif.] Land Grants. [Scale not given -- (W 118°02'/N 33°57')] Courtesy of The Bancroft Library, UC Berkeley.

U.S. Army Corps of Engineers (USACE), 1942 (reproduction). Las Bolsas Quadrangle, California: 15-minute series (Topographic); 1:62,500; Polyconic projection (118 15'00'' - 118 00'00'' W 33 45'00''- 33 30'00''N).Washington, D.C. Courtesy of The David Rumsey Collection.

U.S. District Court, Southern District, 1861?. [Map of the northern boundary line of the Rancho Los Alamitos : Calif.] Land case. 290. Courtesy of The Bancroft Library, UC Berkeley.

U.S. District Court, Southern District, 184-? [Rancho San Antonio, Los Angeles County, Calif.] Land case 9. Plan del sitio ocupado por el Cindo. Anto. Ma. Lugo: Land Grants. Courtesy of The Bancroft Library, UC Berkeley.

U.S. District Court, Southern District, 1857. Plat of the Final Survey of the Rancho La Puente, finally confirmed to Samuel Carpenter: [Calif.] Land Case 194. Workman and Roland, Confirmee (Los Angeles County). Courtesy of The Bancroft Library, UC Berkeley.

U.S. Survey General's Office, 1843? Plat of the Rancho Los Alamitos, finally confirmed to Abel Steams: Los Angeles/ Orange Counties [San Francisco, CA].Courtesy of The Bancroft Library, UC Berkeley.

U.S. District Court, Southern District, 1868. Plat of the Rancho Santa Gertrudes, finally confirmed to Samuel Carpenter: [Calif.] [1:63,360]80 chs. to 1 in. Land Grants. Courtesy of The Bancroft Library, UC Berkeley.

U.S. District Court, Southern District, 184-?. [Rancho de Sn. Jose de Sn. Gabriel] [Los Angeles County, Calif.] Land case 128 SD. Land Grants. Courtesy of The Bancroft Library, UC Berkeley.

U.S. District Court, Southern District, 1855. Rancho San Juan Cajon de Santa Ana: situated in Los Angeles County, Cal. ... claimed by Dn. Juan Pacifico Ondiveras / [George Hansen] Land case 140. Courtesy of The Bancroft Library, UC Berkeley.

Wheeler, G. M., U.S. Army Corps of Engineers (USACE), 1878. Part of Southern California Atlas Sheet. 1:506,880.Washington, D.C. Courtesy of Davis Rumsey Collection.