Books on Space Exporation are interesting to read and own, and in a suprisingly short time become "out of print." Thus they fall into the category of space collectable.
The books discussed here just happen to be of interest to me. Some are currently available; no doubt to become future collector's items.
Exploring the Moon : The Apollo...
Here are a number of very interesting volumes. The series of books from Mars Society conferences. What is especially significant about these volumes is the contributors are most often volunteers. If you are interested in observing the role of citizen scientists and engineers among others, read these volumes.
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