I have kept everything on one page, as I believe these makes it easier to read, and to search, using the handy-dandy CTRL+F function.
So a reference to something that appeared in the third chapter of Part 2 will appear as 2.3 (Part 2, Chapter 3…you probably get it). From Davitt Bell’s guide, I borrowed the basic Part/Chapter citation style. Arguably the two most useful are Steven Weisenburger’s A Gravity's Rainbow Companion: Sources and Contexts for Pynchon's Novel, first published in 1988, and Michael Davitt Bell’s Some Things That “Happen” (More Or Less) In “Gravity’s Rainbow,” which was first published in 1996 online, where it remains available.
I am aware that such guides already exist.
I initially wrote this guide as something like a reading diary, during my third read-through of Gravity’s Rainbow.