The Foundation made studies of natural and social sciences as well as business and economics, and new methods were devised for isolating significant cycles present in time series. A magazine called Cycles was published from June 1950, and the foundation also published a four-volume collection of reports on cycles including some of Dewey's selected writings on cycles named "Cycles Classic Library Collection". Together with author Og Mandino, Dewey published a book entitled Cycles: The Mysterious Forces That Trigger Events.[2]