While Kolatch operated as a publisher, he also authored over 50 books, primarily published through his own publishing company. His most renowned series began with the Jewish Book of Why, followed by The Jewish Child's First Book of Why, The Jewish Book of Why: The Torah, and The Jewish Mourner's Book of Why). This series alone sold more than 1.5 million copies in English, French, Spanish, German, and Portuguese. He published more books, however, on the topic of naming babies (and pets). Starting with his 1948 book These Are The Names, he published at least eight name-oriented books. In 1989 an article profiling Kolatch noted his expertise in baby naming as "Newspapers across the country have called Rabbi Alfred J. Kolatch the nation's foremost expert on naming babies." and in the
Encyclopaedia Judaica (2nd Ed.), published in 2007, he was described as "Recognized as one of the world's leading authorities on Hebrew and English nomenclature". == Books ==