Books by Charles Ginenthal are available in unformatted form as free downloads at a website established for that purpose:
Those books formatted for ebook readers such as Caliber are available on Lulu.com and since Lulu is a sort of a clearing house, should also be available on other ebook venues shortly.
Charles Ginenthal on Lulu.
The second edition of Cosmos in Collision is also available in ebook format on Lulu now.
Paperback versions will follow shortly.
The Caliber generiuc ebook reader is a free download.
Human origins, the real version:
15-minute intro to the basic idea of the Ganymede hypothesis: