http://en.wikipedia.org/wiki/Portland,_Maine, Earthquake:
http://www.huffingtonpost.com/2012/10/18/maine-earthquake-facts-2012_n_1980933.html,
http://earthquake.usgs.gov/earthquakes/eventpage/usb000d75b#summary,
http://www.usatoday.com/story/ondeadline/2012/10/16/earthquake-maine-boston/1637441,
http://copycateffect.blogspot.ca/2012/10/ME-Earthquake.html
Boston:
http://skyscraperpage.com/diagrams/?cityID=145,
http://www.bostonglobe.com/metro/2012/10/17witness-hollis-maine-quake-felt-like-boom-rumble-and-sinking-feeling/h0Vg99l5NFhOXmx36nM4PI/story.html,
http://www.boston.com/news/local/vermont/2012/10/16/maine-earthquake-rattles-new-england/JEHscgGOGsUqeNngsKCcgJ/story.html
Montreal:
http://skyscraperpage.com/diagrams/?cityID=22, http://www.imtl.org/montreal/timeline.php,
http://www.ctvnews.ca/canada/4-5-magnitude-earthquake-shakes-montreal-area-1.989538,
http://www.theglobeandmail.com/news/national/45-magnitude-earthquake-rattles-montreal-area/article4600428
