The latest version of Yard and its documentation should always be available from:
http://www.croftj.net/~fawcett/yard/
The secondary home for Yard is on:
http://sunsite.unc.edu/pub/Linux/system/Recovery/
You should first check the Incoming directory ( http://sunsite.unc.edu/pub/Linux/Incoming/) to make sure a more recent copy hasn't been released.
An HTML version of this documentation, plus changes, should be available from:
http://www.croftj.net/~fawcett/Yard_doc.html
A companion set of prefabricated specifications files are available in the Yard-prefabs package, also available from Sunsite's system/Recovery/ directory. Note that these are now old and may not be very useful.