12 March 1926 St. Francis Dam disaster in San Francisquito Canyon in northern Los Angeles County, California, United States.
St. Francis Dam, article from Wikipedia    https://en.wikipedia.org/wiki/St._Francis_Dam

ST. FRANCIS DAM DISASTER  - Frank Black And The Catholics      https://www.youtube.com/watch?v=mnSj4ZEJGQU&list=RDmnSj4ZEJGQU&start_radio=1
LUCY ON THE LINE  Various recordings on YouTube       https://www.youtube.com/results?search_query=Lucy+on+the+Line+song
Lyrics,information and recording for Lucy On The Line by Tim Griffin from Griffin Educational https://griffined.org/song/lucy-on-the-line
ST. FRANCIS DAM   - John Bergstrom       https://www.youtube.com/watch?v=N3q9xtqYWfg