David Abraham Adler (born April 10, 1947) is an American writer of nearly 200 books for children and young adults, most notably the Cam Jansen mystery series, the "Picture Book of ..." series, and several acclaimed works about the Holocaust for young readers. He graduated from Queens College in 1968 with a bachelor's degree in economics and education.
For the next nine years, he worked as a mathematics teacher for the New York City Board of Education, while taking classes towards a master's degree in marketing, a degree he was awarded by New York University in 1971.
The Cam Jansen character was based on an elementary school classmate of Adler's who was believed to have a photographic memory.
A musical theatre production of Cam Jansen appeared off-Broadway and is currently a touring production of Theatreworks USA.
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