For those who may not know about it, you can read some iconic cryptozoology books for free at  sacred texts (link below).Two I picked up on are :

Abominable Snowmen: Legend Come to Life
by Ivan T. Sanderson [1961]

Mythical Monsters
by Charles Gould [1886]
Dragons, Sea-serpents, Unicorns: fact or fiction?

Link to site where you find many texts on mythology etc.:

https://www.sacred-texts.com/index.htm