Home › Authors › Thomas D. D. Mangelsen 👤 Thomas D. D. Mangelsen 2 books Books by Thomas D. D. Mangelsen Grizzly 399 and Her Four Hungr Grizzly 399 and Her Four Hungry Cubs - HB 2nd Edition - Environmental Heroes Series 2022 Grizzly 399 and Her Four Hungr Grizzly 399 and Her Four Hungry Cubs - PB 2nd Edition - Environmental Heroes Series 2022