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