Interesting books on the history of our area.
Quinnipiac University has put several books on line. Some interesting volumes include: The Colonial History of the Parish of Mount Carmel by John H. Dickerman and the history of our own Sleeping Giant: Born Among the Hills: The Sleeping Giant Story by Nancy Davis Sachse

Information on invasive species in Connecticut is available at the following:
The Connecticut Invasive Plant Working Group
Invasive Plant Atlas of New England