Bordages, Asa. "Joseph Krumgold." In Newbery and Caldecott Medal Books: 1956-1965, edited by Lee Kingman.

71 Boston: Horn Book, 1965. This article provides biographical information about Krumgold.

Krumgold, Joseph. "Acceptance Paper."

In Newbery Medal Books: 1922-1955, edited by Bertha Mahony Miller and Elinor Whitney Field. Boston: Horn Book, 1955. In acknowledging the receipt of the Newbery Award for And Now Miguel, Krumgold compares the village of Los Cordovas with the city of Los Alamos.

Krumgold, Joseph. "Archetypes of the Twentieth Century." School Library Journal (October 1968): 112-115.

Krumgold explains the relationship between And Now Miguel, Onion John, and Henry 3, and he compares these stories to well-known fairy tales. This article gives an excellent summary of the themes of his novels.