Do you mean _Free Culture_ ? If so, I am pretty sure that is released in Creative Commons and can be shared for free in the US. This is in the ebook:
Copyright © 2004 by Lawrence Lessig. This version of Free
Culture is licensed under a Creative Commons license. This license
permits non-commercial use of this work, so long as attribution is
given. For more information about the license, click the icon
above, or visit
http://creativecommons.org/licenses/by-nc/1.0/
BOb