A chapter-by-chapter guide to seven volumes, the four-volume
Book of the Long Sun and the three-volume
Book of the Short Sun, two series by Gene Wolfe. Each chapter has a brief synopsis followed by commentary on such topics as Technology, Unusual Terms and Phrases, Biblical References, et cetera. Each volume has an appendix, giving Timelines and sometimes essays. Both series have an appendix as well, giving combined Timelines and additional essays.