Some things I included at the beginning of volume 1 were Green Lantern: Ganthet's Tale (since it introduces the only Guardian we'll see from issues 50-150), Green Lantern #36, since it shows when Doctor Light was trapped in the battery and acts as a prequel to GL 3D and GL #80, and GL #47, because where else are you going to put that issue?
Also, some things not listed...
GL 80 Page Giants 1,2, and 3, and GL Secret Files 1 and 2.
Also, some things not listed...
GL 80 Page Giants 1,2, and 3, and GL Secret Files 1 and 2.