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http://www.mass.gov/anf/research-and-tech/it-serv-and-support/application-serv/office-of-geographic-information-massgis/datalayers/layerlist.html
http://www.massdot.state.ma.us/planning/Main/MapsDataandReports/Data/GISData.aspx
http://www.mhd.state.ma.us/default.asp?pgid=content/traffic01&sid=about
http://www.mbta.com/about_the_mbta/document_library/?search=blue+book&submit_document_search=Search+Library