Edit: Add:
Tim Kane is Heritage, so are Brett D. Schaefer and Alison Fraser. Doesn't matter what the subject is, Heritage is not subjective. They have a clear bias and agenda. Plenty of books on Joseph Coors, described by his own right wing son as "right of Attilla the hun", and Richard Mellon Scaife, other major Heritage funder. Doesn't matter if you are real "conservative", moderate, liberal, or what. Heritage is NOT for you. Paul Weyrich is bad news.
Coors, Scaife, Weyrich, -- their organizations have been tied up with Nazis, white supremacists, and eugenicists throughout their entire history. Wild people. Weyrich etal stated goal is one-party US, that is not democracy. They've funded projects to revamp "education" so that it's propaganda, not "education". Very far out group.