Yolen is the author of other novels which explore the subject of religion. A novel she published in 1966, Trust a City Kid written with her friend Anne Huston, recounts a boy's experience on a farm owned by Quakers. The Gift of Sarah Barker, published in 1981, is based upon the history of American Shaker communities. Some aspects of the novel are similar to Armageddon Summer, among them the technique of alternating viewpoints and the theme of a mutual attraction between teenagers. Major characters Sarah and Abel seek each other's company in a religious community dedicated to celibacy and strict obedience. Yolen also explores questions of religious leadership and community in her adult fantasy Sister Light, Sister Dark, published in 1988.

Armageddon Summer was adapted for audiocassette in 1999 by Recorded Books, narrated by Kate Forbes and Johnny Heller.