I can hear the sounds of disco music looking at these covers. Or maybe it's Black Sabbath. I can see some kind of early video effects filtered over top of them, the camera zooming in and out on them at a dizzying rate, an overlay of liquid textures swirling across them. The color, line, and compositions of these covers are saturated with the 1970s. The time machine has already been invented. All you have to do is look at these covers.