These give a few addresses of speculated tunnel entrances and areas.
http://www.kansan.com/special_issues/beneath-mass-street-a-network-of-tunnels-from-lawrence-s/article_2b0918c0-6236-11e5-b20f-c7488225bd43.html
http://www.ljworld.com/news/2009/jul/13/tunnels-dig-deep-citys-history/
Moar tunnels in Andover. Andover was a huge part of the underground railroad so there might be tunnels there that haven't been mentioned since they were used long ago.
http://www.andovertownsman.com/news/local_news/a-tunnel-to-nowhere-no-truth-to-hussey-s-pond/article_b1a6ae54-4739-5b0d-9b5b-217147d6aec0.html