This folder consists primarily of unsolicited letters regarding Edison's opinions and widely publicized statements about immortality, theology, superstition, and related subjects. Several of the letters were written in response to a controversial interview that appeared in the January 1911 issue of The Columbian Magazine and to the subsequent criticism of Edison by Roman Catholic Cardinal James Gibbons. The selected items are a representative sample of the letters that received a reply from Edison.

Less than 10 percent of the documents have been selected. Most of the unselected items are letters that were not answered or that received a perfunctory response from Edison.