https://notams.aim.faa.gov/lta/main/viewlta?lookupid=1242098759559550852 - May 2016 radio and sector info for ZBW / Boston Center / Boston ARTCC - also at - https://sites.google.com/site/2016marchnew/home/boston-artcc-may-2016-freqs - also at - https://web.archive.org/web/20160928093442/https://notams.aim.faa.gov/lta/main/viewlta?lookupid=1242098759559550852