Astragalus kerrii
Knight, P. and Cully, A. 1985. A New Species of Astragalus (Fabacea) From Southern New Mexico. NM Energy Minerals and Natural Resources Department. Santa Fe, NM.
Bleakly, D. and S. L. Reed. 1994. Survey for Astragalus kerrii (Kerr's Milkvetch) Capitan Mountains, Lincoln Co., NM. Unpublished report for NM Forestry and Resources Department.
DeBruin, E. 1992. Survey for Astragalus kerrii and Echinocereus fendleri var. kuenzleri in the Capitan Mountains Area of the Lincoln National Forest. Unpubl. report by New Mexico Natural Heritage Program to USDA Forest Service. 50 p.
Reed, S. et al. 1991. Unpublished field notes from Astragalus kerrii/Echinocereus fendleri var kuenzleri survey on 22 May- 31 May 1991.
Karen Lightfoot and Robert Sivinski 1990. Survey reports for Haplopappus microcephala (Lorandersonia microcephala) and Astragalus kerrii. 186p.
Map of scarlet penstemon and Kerr's milkvetch in Lincoln National Forest. 2006.