Boston Public Library
To access the electronic resources at the Boston Public Library, you will need to register for an electronic library card. With your card number, you can log in to your database under the "Art" section of "Electronic Resources."
Basic information on a variety of topics can be found in most of these sites.
They were offering free sheet music when we visited, please let us know if that has changed. NOTE: Not all of these sites are completely free, some also sell downloadable sheet music."