Elias Wrenfield
The line map

Who is in which book

Each line is a character and each stop is a book. Stops run left to right in story order. The number on each stop is the reading order.

Point of viewOn the page
Reading order
Story order
6→5→2→134→7

Book 6 opens first and spans twenty-five years.

Spoiler-free through Book 7. More lines appear as new books come out. Some pages hide things.