How many books did Huey P Long write?

Huey P. Long, the former Governor of Louisiana and U.S. Senator, authored several writings, but he is most known for his book "Every Man a King," published in 1933. This book outlines his political philosophy and vision for America. While he contributed to various articles and speeches, he did not write a large number of books. Overall, Long's literary output is limited primarily to this key work.