If you need to order yourself some Miller Fluid Power stock cylinders, you'll want to have this chart. This thing measures 8.75 by 11.25 inches and is in fine shape. The copyright date is 1973. The Miller logo suspiciously (or not?) resembles the Miller beer logo. Both companies involve manufacturer of cylinders.
I wondered what would happen if you managed to remove the inner sliding card and reverse it. When I did so, I noted that someone named Chuck Long has inscribed his name to both sides of the card.