A Psychochronography in Blue (Part 4)

As is suitable for a TARDIS Eruditorum cover post the story begins in the past.  If you want to go right back to the beginning you can check out the previous posts for volumes 1 2 3 (click the numbers) and the tangentially related A Golden Thread before we continue.

But those are not the beginning of the tale of this book cover, except in the way that my parents being born is the beginning of mine.  No, this books gestation began way back in Phil's Blog, but the cover began back in June, when I had the idea for the cover.  Except it wasn't to be this book's cover, because both I and Phil both agreed it would make a better cover for Volume 5, and thus it shall be.  This left me lacking an idea for this book though, so I went to do some roughs, which after a surprisingly small number of adventures would eventually lead to the following.