Would be an interesting project to slice these into individual panels, and then make them searchable by era, OCR'd text, dominant colors, artist etc. maybe bolt on a meme-generator that lets you change the text.
'PS preventative maintenance monthly' is basically about taking care of army machinery/weaponry, perhaps it sounds boring but it's it's beautifully drawn by Will Eisner and contains characters like Joe Dope, Connie Rodd, Half-Mast and a lot of (often very sexist given this was from the 50's to 70's) humor.
That is incredible stuff! Just reading the letters-from-the-field, you can see these guys took it all seriously. From storing phosphorus shells point-up (in hot weather it would melt and unbalance the shell) to greasing artillery after every water crossing (rust would retard the slides upon firing, tearing the mounts loose etc) each issue was packed with something for everybody.