Could you post a link, please? Searching for those terms leads to a '96 book and some different blog posts, but I am not sure if the ones you are referring to. Thanks!
I'd also add Real Time Rendering [2] to that list.
[0] http://www.pbrt.org/ [1] https://fgiesen.wordpress.com/2011/07/09/a-trip-through-the-... [2] http://www.realtimerendering.com/book.html
It is an absolute beast of a book, and not for beginners. Nor is it written as such; After Ch. 1 the book acts less like a sequential book, and more like an extensive reference guide for anything you'd need to really understand what goes on in a Ray Tracer.
As for "A trip down the Graphics Pipeline", I found it fairly easily:
https://fgiesen.wordpress.com/2011/07/09/a-trip-through-the-...