https://www.ourfamtree.org/obituaries/view.php/William-Swanson/id/1505
https://books.google.co.th/books?id=tf08uKySoiwC&pg=PA129&lpg=PA129&dq=Bill+Swanson+Lituya+Bay+heart+attack&source=bl&ots=iYwXL3ceR6&sig=ACfU3U0ZvdzHMNRaBbc63dPLQb9mjnm-yg&hl=en&sa=X&ved=2ahUKEwi864zVvpnnAhUMxzgGHSG8A1EQ6AEwCHoECAgQAQ#v=onepage&q=Bill%20Swanson%20Lituya%20Bay%20heart%20attack&f=false
http://www.tomorrowsclass.com/wp-content/uploads/2014/05/What-it-feels-like-to-survive-a-tsunami.pdf
https://en.wikipedia.org/wiki/Lituya_Bay
http://historynuggets.squarespace.com/nuggets/2018/7/8/lituya-bay
https://geology.com/records/biggest-tsunami.shtml
https://www.hakaimagazine.com/features/when-mountains-fall-into-the-sea/
https://books.google.co.th/books?id=iGYj3eT384MC&pg=PA76&lpg=PA76&dq=bill+wagner+tsunami+account+the+badger&source=bl&ots=cDgX3R3T99&sig=ACfU3U1a2Jvt8RuC2UPAfYigHCIc7f8Crw&hl=en&sa=X&ved=2ahUKEwibqs62uZnnAhVNwjgGHYbFDGsQ6AEwAHoECAcQAQ#v=onepage&q=bill%20wagner%20tsunami%20account%20the%20badger&f=false
https://sea-to-summit.net/1958-lituya-bay-ak-hit-by-1700-mega-tsunami/