Law Enforcement Against Entheogens: Is it Religious Persecution?  Entheogens and the Future of Religion.
Excerpted from a chapter in the book Entheogens and the Future of Religion. Edited by Robert Forte. San Francisco, CA: Council on Spiritual Practices (1997). An excerpt from the chapter by Eric E. Sterling discusses the history and nature of laws against the use of entheogens -- peyote, marijuana, and other plant materials used for spiritual purposes.

Sterling, E.E. (2000). Friendly Fire. Haverford Alumni Magazine, pp. 1-8. (Not: Sterling is a member of the Bethesda Friends Meeting. Haverford College was founded by Quakers and is still managed in accord with Quaker Values.) 

Snake, R. (with Sterling, E.E.) (1990, September 29). Native American Worship With Peyote is Not Drug Abuse. This Statement by Reuben Snake at the U.S. capitol was written with the help of CJPF Executive Director Eric E. Sterling. It asserts that the use of peyote by Native Americans is a religious ritual, not drug abuse, and is protected by the Constitution.