He published his first children’s book in 1936 in Hungarian. While in Mexico after WWII he published a play and three other books in English. His award-winning book, Chúcaro was translated into many other languages, such as the German edition shown above.

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• Kalnay, Francis. Foglalj helyet Péter (Translation: Take a Seat, Peter).  New York: Europa Books, 1936
   

• Kalnay, Francis. The Song of the Wooden Doll: A Play in Three Acts. Listed in the Catalog of Copyright Entries, March 13, 1952. DU30319
   

• Kalnay, Francis. Chucaro: Wild Pony of the Pampa (1st edition). New York: New York : Harcourt Brace, 1958
   

• Kalnay, Francis and Witold T. Mars. The Richest Boy in the World (1st edition). New York : Harcourt, Brace 1959
   

• Kalnay, Francis. It Happened in Chichipica. New York : Harcourt Brace Jovanovich, 1971