Kessel's articles and critical reviews have been arranged into two sub-series: articles by Kessel and articles about Kessel. Articles by Kessel generally relate to particular authors or aspects of science fiction writing, and were published in encyclopedias, science fiction periodicals, or literary sections of newspapers. Also included are critical reviews written by Kessel of the works of other science fiction and speculative fiction authors. These files include primarily manuscripts, correspondence, research materials, and photocopies of Kessel's published articles.

Articles about Kessel written by other authors relate to Kessel's teaching and authorship and include critical reviews of Kessel's publications.

Please note that interviews with Kessel are located in a separate sub-series.