Edwin Gaustad, a retired UC Riverside history and religious studies professor who was a preeminent scholar on the separation of church and state, and who did groundbreaking work mapping the nation's religious landscape, has died. He was 87.
Gaustad died March 25 of natural causes at an assisted-living facility in Santa Fe, N.M., said a daughter, Susan.
"He did incredible work as kind of a geographer of American religion," said Leigh Eric Schmidt, a Harvard University professor of the history of religion in America. "He did this big atlas about what the American religious scene looked like, county by county, over a long stretch of history."