Haynes Manual for the Apollo 1 LM and CSM. Awesome.

I've linked to a single photo, because it makes me think: what it must be, to be taking photographs for Science, millions of miles away via radiowaves, and to have them not only be useful, but to turn out as beautiful as this one. How wonderful to know that the universe is as beautiful as the world, and that even in the name of research, we can take such beautiful pictures.