I have all the above and probably all that have been out (except the goofy hillbilly ones) but the best by far are the ones by David Paulides. The
Hoopa Project- 2008 Tribal Bigfoot- 2009 Missing 411-Western U.S.- 2012 Missing 411-Eastern U.S. 2012. These books will blow your mind.
The Missing 411 books made me do a lot of google earthing to check out places where people just vanished or where found in places far from where they
where missing from. Just made me ponder "WTF!!" alot.
The cheapest way to get those books are on his web site here www.nabigfootsearch.com...