I read about this in the book I bought about Connecticut Tornadoes...which I never read through because some things in it annoyed me. Anyways, if this is the event I am thinking of there was something very specific which prevented a much more significant death toll. And I think it was that storm that went through the New Britain area. But if it had tracked I guess just some miles to the northeast (closer to Hartford) the death toll may have been well into the hundreds, if not, higher.