Press World: Two Authors with the Right Stuff
- Collected news and reviews for both Jacqueline Lichtenberg and Jean Lorrah. Mainly The Unity Trilogy and Dreamspy.
- http://art-entertainment.press-world.com/v/33602.html

Baryon Online: Sime~Gen The Unity Trilogy
- Summaries and review by Harriet Klausner.
- http://www.baryon-online.com/baryon93/siuntr.html

Books Under Review: Lichtenberg, Jacqueline
- Reader reviews of Jacqueline's books. Mostly contains reviews of The Unity Trilogy.
- http://www.booksunderreview.com/Arts/Literature/Authors/L/Lichtenberg,_Jacqueline/

Sime~Gen: The Unity Trilogy
- The Sime/Gen novels are now being republished by Meisha Merlin in sets of three per volume. The first, The Unity Trilogy, is now available. This is the publisher's page for the book, including links for ordering.
- http://www.meishamerlin.com/Sime~GenTheUnityTrilogy.html

The New York Times: Book Review Search Article
- Review of Sime/Gen by Gerald Jonas on January 23, 1983.
- http://www.nytimes.com/books/97/03/09/reviews/clarke-two.html

Simegen-L (Virtual Selyn)
- This is a subscription page for Virtual Selyn (simegen-l@simegen.com) the official mailing list for fans of the Sime/Gen novels by Jacqueline Lichtenberg and Jean Lorrah.
- http://www.simegen.com/mailman/listinfo/simegen-l/

The Secret Pens
- Alternative online fanzine for Jacqueline Lichtenberg's Sime~Gen Universe. Fan fiction, artwork, humor, poetry, the Psychospatial Navigator, simegen-l archives and roleplaying logs.
- http://www.secretpens.org/

Sime~Gen Inc.
- Jacqueline Lichtenberg and Jean Lorrah's business site, containing their personal pages, the official Sime~Gen fan sites, and various community services such as a free writing school.
- http://www.simegen.com