Ecology

Notes of a naturalist in South America

Forest Trees of Illinois: How to Know Them

Trees: A Woodland Notebook

Love's Meinie: Three Lectures on Greek and English Birds

The Structure and Habits of Spiders

More Hunting Wasps

The Legend of Kupirri, or, The Red Kangaroo

Running Free

Adventures of a Young Naturalist

Wilderness Babies

Ecological Observations on the Woodrat, Neotoma floridana

The Nakimu Caves, Glacier Dominion Park

Pere Marquette State Park

Flowers of Mountain and Plain

The Young Collector's Handbook of Ants, Bees, Dragon-flies, Earwigs, Crickets, and Flies

When the Wilderness Calls – Bertrand W. Sinclair Collection

A Thousand-Mile Walk to the Gulf (With Original Drawings & Photographs)

Everglades Wildguide

A Book of Dartmoor

The Murray River