Passerculus sandwichensis
McCallum, D.A. 1982. A new breeding population of savannah sparrows with a first nest for New Mexico. NMOS bulletin 10(1):6-8.
Gaines, Karen H. and S. Boczkiewicz. 1995. Specimen tag information from the New Mexico State University vertebrate museum, Las Cruces. 14 December 1995.
Gaines, K.H. and N. Runyan. 1995. Specimen tag information from the Museum of Southwestern Biology bird collection, University of New Mexico, Albuquerque. July 1995.
Stahlecker, D.W. and E. Espinoza. 1988. Savannah sparrow breeding in Rio Arriba County: second verified New Mexico nest. NMOS bulletin 16(2):10-12.