Children's Books:
- "The Ice Book" (1935)
- "The Rock Book" (1940)
- "The Sea Book" (1940)
- "The Forest Book" (1941)
- "America Today and Yesterday" (1955)
Gardening and Nature Books:
- "Gardener's Guide" (1939)
- "Gardens for Small Country Places" (1941)
- "The Penguin Gardener" (1951)
Historical Books:
- "New Hampshire: An Illustrated History" (1930)
- "Westward! The Story of the Oregon Trail" (1945)
- "Early History of the Town of Plymouth, New Hampshire" (1947)
Art and Cultural Books:
- "New England: Crossroads of American Culture" (1954)
- "America Goes to the Fair: A Pictorial History of World's Fairs in the U.S." (1958)
- "Christmas, Past and Present" (1959)
Travel and Outdoor Books:
- "Exploring the Southwest Canyons" (1953)
- "Camping in Old New England" (1960)
- "A Camper's Guide to Canada" (1965)
Biographical Books:
- "The Man Who Killed Hitler: The Story of Ewald-Heinrich von Kleist" (1949)
- "Harry Truman: A Biography" (1951)
- "Robert E. Lee: Lee's Dispatches: Unpublished Letters of General Robert E. Lee, C.S.A., to Jefferson Davis and the War Department of the Confederate States of America, 1862-1865" (1957)
Other Notable Books:
- "The Amazing Story of the Human Race: From Early Caveman to Spaceships" (1960)
- "What Happened in History" (1962)
- "The First Americans: The Lost Tribes of the New World" (1962)
As a skilled writer and illustrator, Eastwood Atwater not only educated readers but also brought his creative insights to various topics, making him a renowned figure in multiple literary fields.