Plants

Summer Flowers of the High Alps

Trees of Indiana First Revised Edition (Publication No. 13, Department of Conservation, State of Indiana)

The Romance of Plant Life

Floral Illustrations of the Seasons

Forest Trees of Illinois

Michigan Trees: A Handbook of the Native and Most Important Introduced Species

How to Know the Ferns

Poison-ivy, Poison-oak and Poison Sumac: Identification, Precautions and Eradication

Palm trees of the Amazon and their uses

Canadian Wild Flowers: Selections from the Writings of Miss Helen M. Johnson

Seed Dispersal

Wayside and Woodland Trees: A pocket guide to the British sylva

The Study of Plant Life

The Botanical Lore of the California Indians with Side Lights on Historical Incidents in California

A Synopsis of the British Mosses

Identification of the Larger Fungi

Parables from Flowers

Ferns of Hawaii National Park

Fossil Forests of the Yellowstone National Park

Trees of the Forest: Their Beauty and Use