"Applegate, Katherine (Alice)." In Authors and Artists for Young Adults, vol. 37.

Detroit: Gale, 2000. A biographical essay with comments on Applegate's life and work.

"Applegate, Katherine (Alice)." In Something about the Author, vol. 109. Detroit: Gale, 2000. An essay that includes biographical information about Applegate and information about her writing.

"NYC Radio Station Celebrates the Season." Publishers Weekly (January 17, 2000): 26. Mentions the marketing of the "Everworld" series.

Review of Search for Senna. Publishers Weekly (June 21, 1999): 69. In this review the critic says, "With her blend of accessible story and mythological cast of characters, Applegate is sure to attract a host of new fans."

"Scholastic's Animorphs Series Has Legs."

Publishers Weekly (November 3, 1997): 36-37.