Sam Komlenic wrote a very detailed and very accurate account of his memories of Michter's from the late 70's until its closure at the end of the 80's. I've been in conversation with Sam for a few months now about various Michter's things and he is certainly as big a fan of the place as I am- and he had the privilege of actually visiting the distillery while it was in operation! Please read this article. It will give you a great idea of what the whole Michter's tour experience was like.
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