American Civil Liberties Union of Vermont (n.d.). "Border Patrol Stops". American Civil Liberties Union of Vermont. Archived from the original on February 13, 2012. Retrieved December 17, 2011.
Halvorsen, Lisa; O'Brien, Pat Goudey; Tree, Christina (2018). Explorer's Guide Vermont (Fifteenth ed.). The Countryman Press. ISBN9781682681671. Archived from the original on January 14, 2023. Retrieved August 17, 2019.
"Interchanges"(PDF). ctps.org. Boston region Metropolitan Planning Organization. Archived(PDF) from the original on December 29, 2019. Retrieved August 10, 2018.
"Concurrent Roads"(PDF). ctps.org. Archived(PDF) from the original on December 29, 2019. Retrieved December 29, 2017.
Glaze, Mark; Perritt, Karen (June 28, 2017). "I-84 HOV Lanes-Hartford, Connecticut". Federal Highway Administration. Archived from the original on August 15, 2018. Retrieved August 15, 2018.
google.com
Google (August 10, 2018). "Route 9 Interchange" (Map). Google Maps. Google. Retrieved August 10, 2018.
Google (August 10, 2018). "I-91 to 40 Old State Rd" (Map). Google Maps. Google. Retrieved August 10, 2018.
Google (August 13, 2019). "Interstate 91 in Vermont" (Map). Google Maps. Google. Retrieved August 13, 2019.
Office of Planning and Economic Development (2008). "River's Landing Project". City of Springfield, MA. Archived from the original on July 3, 2008. Retrieved December 17, 2011.
"Interstate 91 Traffic Statistics"(PDF). vtrans.vermont.gov. Vermont Agency of Transportation. Archived(PDF) from the original on August 15, 2018. Retrieved August 12, 2018.
"Vermont Exit Numbering". Vermont Agency of Transportation. Archived from the original on October 26, 2021. Retrieved January 14, 2022.
dec.vermont.gov
"Passumpsic River Valley"(PDF). dec.vermont.gov. Vermont Department of Environmental Conservation. Archived(PDF) from the original on May 15, 2017. Retrieved August 10, 2018.
"Interchanges"(PDF). ctps.org. Boston region Metropolitan Planning Organization. Archived(PDF) from the original on December 29, 2019. Retrieved August 10, 2018.
Glaze, Mark; Perritt, Karen (June 28, 2017). "I-84 HOV Lanes-Hartford, Connecticut". Federal Highway Administration. Archived from the original on August 15, 2018. Retrieved August 15, 2018.
"Vermont I-91 Exits"(PDF). vtransmaps.vermont.gov. Vermont Transportation. Archived(PDF) from the original on May 19, 2017. Retrieved August 15, 2018.
Halvorsen, Lisa; O'Brien, Pat Goudey; Tree, Christina (2018). Explorer's Guide Vermont (Fifteenth ed.). The Countryman Press. ISBN9781682681671. Archived from the original on January 14, 2023. Retrieved August 17, 2019.
"Passumpsic River Valley"(PDF). dec.vermont.gov. Vermont Department of Environmental Conservation. Archived(PDF) from the original on May 15, 2017. Retrieved August 10, 2018.
"Interstate 91 Traffic Statistics"(PDF). vtrans.vermont.gov. Vermont Agency of Transportation. Archived(PDF) from the original on August 15, 2018. Retrieved August 12, 2018.
Madden, Steve. "Spanning the Sound". Newsday. Archived from the original on July 10, 2004. Retrieved September 18, 2015.{{cite news}}: CS1 maint: unfit URL (link)
American Civil Liberties Union of Vermont (n.d.). "Border Patrol Stops". American Civil Liberties Union of Vermont. Archived from the original on February 13, 2012. Retrieved December 17, 2011.
Office of Planning and Economic Development (2008). "River's Landing Project". City of Springfield, MA. Archived from the original on July 3, 2008. Retrieved December 17, 2011.