 Campbell also wrote an entry on Ryan for the "St James Guide to Horror, Ghost and Gothic Writers".In 2002 Midnight House reprinted "Echo of a Curse" with an introduction by D. H. Olsen with full descriptions and critical appraisal of all of the R. R. Ryan novels.Like earlier commentators, Olsen maintained that Ryan was a woman, in part "due to Ryan's inability to depict convincing male characters, while her female characters are much more fully drawn", as well as "significant examples of typically female outlooks and attitudes pervading even the most male-dominated of her novels".