This is an almost complete set of the Book of Popular Science from 1963. It's in good shape for its age, with nice crisp pages, and overall clean. Not mint condition, but very good. This is volumes 1-5 and 7-9. It's missing volume 6. Great nostalgic set. Talks about lots of science and technology of the day, even about building observatories on the moon! They said they were certain within 15 years that there would be observatories on the moon, but that puts it at 1978, and last I checked that didn't happen. Good stuff. Needs a new home.