The Great Blizzard of 1888
It sits in the Parthenon of CT blizzards with 1978 and 2013. Long duration monster with exceptional drifting.
Runner up would be February 1899
While not the biggest event we've seen here in the region, the combination of snow and extraordinary cold across much of the US would be a sight to behold today. To see -2 in Tallahassee just defies logic today. Hell it's hard for me to even imagine a place like HFD going -5 now lol.
https://journals.ametsoc.org/view/journals/wefo/3/4/1520-0434_1988_003_0305_tgaoae_2_0_co_2.xml?tab_body=pdf