- The Door of Dreams (1918)
- The Secret Bird (1935)
- The Lifted Cup (1941)
- The Door of Dreams: Selected Poems (1944)
- The Selected Poems of Isabella Gardner (1963)
Children's books:
- The Little Book of American Poets (1915)
- The Child's Book of Verse (1917)
- The Fairy Gold (1919)
- The Secret Bird (1935)
Anthologies:
- Tittle's American Song Series (1914)
- The Little Book of Modern Verse (1919)
- Second Book of Modern Verse (1925)
- The Third Book of Modern Verse (1932)
- The fourth Book of Modern Verse (1932)
- The Poetry of Women I: From Antiquity to Modern Times (1944)