Reply To: 20 Kislev in Chabad

I’ve checked other threads in the coffee room, and I see that in the past there have been others more knowledgeable than me who have questioned Chabad’s “history” and who have even doubted some of the things written by one of their rebbes. So I don’t feel I’m in terrible company if I question the veracity of this story.

How long ago were Chabad celebrating 20 Kislev? Are there any primary sources? By that I mean that if there is a statement in one of the seforim of, say, the Tzemach Tzedek himself, I would consider that primary and reliable. But a more recent source claiming that the Tzemach Tzedek said something about it is neither primary nor reliable.