Natural hybridization of the bisexual teiid lizard Cnemidophorus inornatus and the unisexual Cnemidophorus perplexus in southern New Mexico
Morphological variation in selected populations of the teiid lizards Cnemidophorus velox and Cnemidophorus inornatus
Cnemidophorus tigris punctatus: A new whiptailed lizard from northwestern Sonora, Mexico
Cnemidophorus alpinus: A new species of teiid lizard from Puebla, Mexico
Further studies on the germination of seeds of Colorado alpine plants
Taxonomic remarks on some American alpine plants
The lichen flora of Colorado: 2. Pannariaceae
Summary of the distribution of the herpetofauna of Colorado: A supplement to "An annotated check list of the amphibians and reptiles of Colorado"
Studies on the germination of seeds of Colorado alpine plants
Gastropoda of the 1962 University of Colorado Museum expedition in Mexico