to order on Amazon.com
In the Seattle area, The Librarian's Almanaq is available at:
Elliott Bay Book Company and Ada's Technical Books
From the cover:
The Librarian's Almanaq was initially released
April 18th, 2015 at Microsoft Puzzle Hunt 16.
It went on sale to the public on May 1st, 2015.
Errata for the Puzzle Hunt 16 edition