Nature

The turtles, snakes, frogs and other reptiles and amphibians of New England and the north

Colin Clout's Calendar: The Record of a Summer, April-October

Grasses: A Handbook for use in the Field and Laboratory

The Challenge of the North

New-England's Rarities Discovered

By the Marshes of Minas

How to Keep Bees

CMH Publication #24–1Learning Lessons in the American Expeditionary Forces

Eighth State of the Union Address

A Short Account of the Botany of Poole

First State of the Union Address

Letters to a Friend, Written to Mrs. Ezra S. Carr, 1866–1879

A Short History of the Academy of Natural Sciences of Philadelphia

From North Pole to Equator: Studies of Wild Life and Scenes in Many Lands

On poetic interpretation of nature

Second State of the Union Address

Polar Exploration

Natural History: Mollusca

Natural History of the Ground Squirrels of California

Stars of the Desert