Depending on time of day and whether or not there are activities going on in town or at the library, muggle traffic can be EXTREMELY high. Please replace cache exactly as you found it, then go in and grab a book!
If you find it in the summer....yes, they're edible.
The Mason Library, called “the most beautiful library in America” was designed by Blanchard & Barnes of New York. Mary A. Mason, widow of Captain Henry Hobart Mason, left $50,000 to build and furnish a new library, to replace one in a clapboard house previously on the site. Mrs. Mason summered in Great Barrington and is buried there.
Dedicated July 24, 1913, the library was rededicated April 2007 after extensive renovations that doubled its size and made it handicapped accessible.