Nov. 27: LIVERMORE, a talk on historic railroads will be held at Norlands Living History Center, 290 Norlands Road. 897-4366

Dec. 1: PORTLAND, author Lisa Jahn-Clough will speak at noon at Portland Public Library, 5 Monument Square. Free 871-1710

Dec. 2: LEWISTON, Susan Morse, wildlife biologist and founder of the non-profit organization Keeping Track,” will speak about New England forest mammals at 7 p.m. at Bates College Muskie Archives. 786-6255

Dec. 3: LEWISTON, Michele Goldsmith, National Geographic researcher, will speak on “Gorilla Conservation: Is Ecotourism the Answer?” at 2:10 p.m. at Bates College Chase Hall Lounge, 56 Campus Ave. Free 786-6329