With pictures by the author, published by Charles Scribner's Sons:
- The Bashful Earthquake
- A Child's Primer of Natural History; a revision and extension of this title by Margaret Fishback and Hilary Knight appeared as A Child's Book of Natural History (USA: Platt & Monk, 1969)
- Overheard in a Garden
- More Animals
- The Rubaiyat of a Persian Kitten
- The Fairy Godmother-in-law
- A Little Book of Bores
- The Peter Pan Alphabet
- The Astonishing Tale of a Pen-And-Ink Puppet
- A Kitten’s Garden of Verses
With John Cecil Clay:
- Cupid’s Cyclopedia
- Cupid’s Fair-Weather Booke
With Addison Mizner and Ethel Mumford
- The Cynic's Calendar of Revised Wisdom for 1903
- The Limerick Up to Date Book (1903)
- The Cynic's Calendar of Revised Wisdom for 1904 (1903)
- The Entirely New Cynic's Calendar of Revised Wisdom for 1905 (1904)
- The Complete Cynic's Calendar of Revised Wisdom for 1906 (1905)
- The Altogether New Cynic's Calendar of Revised Wisdom for 1907 (1906)
- The Quite New Cynic's Calendar of Revised Wisdom for 1908 (1907)
- The Perfectly Good Cynic's Calendar (1908)
- The Complete Cynic (1910)
- The Revived Cynic's Calendar (1917)