I've never heard of a Genealogy Society at Hudson, but there's a wonderful Hudson "Library" with it's fine Obituary collection and there is a Hudson Historical Museum open a few days per week, mostly in the afternoons. The Libray hours are Mon - Tue 10 a.m. - 6 p.m. Wed. 10 a.m.- 8 p.m. Thursday closed - Fri & Sat 10 a.m. - 5 p.m. Eldon Hills @ Petersburg, Mi.