I bought “The Space Program Quiz & Fact Book during a visit to Space Camp 25 years ago. I never gave up but it took me this much time to actually go through it. The test is divided into five chapters: Manned Space Flights; Nicknames, Code Names; Messages and Quotes; Dreamers and Pioneers; and unmanned Space Probes. The format is question and answer supplemented by many black and white pictures and appendices that assemble facts in easy to find tables.
I found this to be an enjoyable book. It contains a lot of information, some important, some trivial. It is easy to read. You open it, read as much as you want then close it until you are ready again. I am glad I purchased it even though it took a long time until I was ready to read. Although now dated it is a great source of information about the early space program.