Great Lakes Association of Astronomy Clubs ( GLAAC ): Events calendar, photographs, meeting information and links to local clubs.
Raisin Valley Land Trust: Non-profit, community based corporation organized for the purpose of preserving environmental, agricultural and historical characteristics of the upper River Raisin watershed.
The Sirius Stargazers Club: Amateur astronomers' group hosting star parties. Events, guidelines, trivia, 20" telescope, galleries, library, caring for eyepieces, and links.