In the Footsteps of the Russian Snowman   Dmitri Bayonov & Dr Igor Bourtsev

Sasquatch: The Apes Among Us
John Green

Bigfoot Casebook updated: sightings
and encounters  1818 to 2004.    
Janet Bord, Colin Bord, Loren Coleman

American Bigfoot: Fact not Fiction
Dmitri Bayanov

North Ameria's Great Ape
John Bindernagel

Bigfoot on the East Coast
Rick Barry

The Locals
Thomas Powell

In The Spirit of Seatco
Henry Franzoni

Valley Of The Skookum
Sali-Sheppard Wolford

Ivan T. Sanderson's Crypto books

Visits from the Forest People
Julie Scott and the Scott family
Autumn Williams tells the story of the transformation of a witness into a bigfoot researcher, then his progress to becoming a witness again.
A truly excellent book, available HERE