William A. Weber – författare

Valley of the Second Sons

Letters of Theodore Dru Alison Cockerell, a Young English Naturalist, Writing to His Sweetheart and Her Brother About His Life in West Cliff, Wet Mountain Valley, Colorado 1887-1890

Bryophytes of Colorado

Mosses, Liverworts, and Hornworts

Rocky Mountain Flora

A Field Guide for the Identification of the Ferns, Conifers, and Flowering Plants of the Southern Rocky Mountains from Pikes Peak to Rocky Mountain National Park, and from the Plains to the Continental Divide

Rocky Mountain Lichen Primer

American Cockerell

A Naturalist's Life, 1866-1948

Colorado Flora

Eastern Slope, Fourth Edition A Field Guide to the Vascular Plants