Scammon was involved in the Swedenborgian Church, building the first such church in Chicago, creating the Illinois Society of the Swedenborgian Church, and serving as vice-president of the United States general convention of the church for ten years.
Scammon's involvement with the Swedenborgian Church encompassed various aspects, including constructing its initial house of worship in Chicago, forming an organization to support the church's goals (the Illinois Society), and serving as a key figure in the church's national leadership for ten years.