About the book (from Wikipedia):
The Preserving Machine is a collection of science fiction stories by American writer Philip K. Dick. It was first published by Ace Books in 1969 as part of their Ace Science Fiction Specials series. The stories had originally appeared in the magazines Fantasy and Science Fiction, Galaxy Science Fiction, Beyond Fantasy Fiction, If, Amazing Stories, Planet Stories, Worlds of Tomorrow, Imagination and Satellite.
A hardcover issue of this book was released through the Book-of-the-Month Club (USA) in late 1969 and remained available through 1970. It is an octavo-sized book, bound in gray textured paper boards, stamped in green on the spine, in a dust-cover with “Book Club Edition” printed in lieu of the price on the bottom front flap. It remains the only hardcover edition of this title ever printed.