Strange Creatures Seldom Seen is a new book that will come out April 30th, written by John Warms. It's publisher is Coachwhip Publications, operated by Chad Arment, who has written several cryptozoology books of his own. It will be Coachwhip's third cryptozoology book this year: the first two being The Spotted Lion(republished, it originally came out in the 1930s) and the other being Shadows in the Woods: A Chronicle of Bigfoot in Maine.
Thee book includes sightings of Bigfoot, Lake Monsters, giant beavers, "Beaver-ducks", underwater moose, and many other things.
You can order the book here.