Mordecai M. Kaplan, The Meaning of God in Modern Jewish Religion.  Kaplan’s most important book. Study it. More accessible than Judaism as a Civilization.  Wayne State University Press

Mordecai M. Kaplan, Questions Jews Ask. May be hard to get but worthwhile. Short answers to all major religious, philosophical and theological issues.

 Mordecai M. Kaplan, Judaism Without Supernaturalism: The only Alternative to Orthodoxy and Secularism.  The Reconstructionist Press

 Mel Scult, The Radical American Judaism of Mordecai Kaplan. Covers and analyzes all the major issues.  Indiana University Press

 William E. Kaufman, Contemporary Jewish Philosophies. A well written comprehensive survey of twentieth century Jewish thought by a strong Kaplan supporter. In addition to a fine chapter on Kaplan, includes chapters on Heschel, Buber, Rosenzweig, Baeck and Richard Rubenstein. Reconstructionist Press

 Rebecca T. Alpert and Jacob Staub, Exploring Judaism: A Reconstructionist Approach.  A fine beginner’s guide to the essence of Reconstructionist thinking. Reconstructionist Press