Brett R. Goforth and Richard A. Minnich. 2007. Evidence, exaggeration, and error in historical accounts of chaparral wildfires in California. Ecological Applications 17:779–790.

Appendix A. Chaparral and coastal sage scrub mapped near Santa Ana, California, by the Weislander Vegetation Type Map survey in 1940 matches a similar distribution of this shrubland vegetation mapped in 1887.

FIG. A1. Chaparral and coastal sage scrub mapped near Santa Ana, California, by the Weislander Vegetation Type Map survey in 1940 matches a similar distribution of this shrubland vegetation mapped in 1887. Shrublands are indicated by the hatched area on the left map produced in 1887, and shown as green shadings on the right map produced in 1940. The reference numbers are provided at the same positions on the eastern boundary of the San Joaquin Rancho near Santa Ana. Sources are: left, Kinney. A. 1887. First biennial report of the California State Board of Forestry for the years 1885–1886. Sacramento, California, USA. and right, Vegetation Type Map Survey of California for the Corona 15 minute topographic quadrangle (U.S. Geological Survey), published by the U.S. Forest Service in 1940.