The Molasses flood in Boston is commemorated in the song Molasses, aka Molasses Rum, which song has a very short thread here on Mudcat.
In the morning it was 42 … (Oh Molasses)
Molasses vat split clean in two … (Oh Molasses Rum)
Two million gallons covered the bay, 21 drowned in the flood that day
Singin’ Oh Molasses, oh molasses rum