Possibly? I definitely grabbed the first link that showed up on Google (on mobile, halfassing it on my way out of work), which may not be the only option.

I can tell you that it’s being managed by a dedicated but small team that maintains a reasonably active onsite presence, but is underfunded and would be justified in winding down public operations during months in which too few people were willing to be outside and in buildings with no temperature control for extended periods.

So it’s possible you’re out of luck this time around. But I would do a search beyond the first hit link I found to make sure. I’d even add that I’ve had good luck emailing organizations like this - I’ve scored many a private tour (not from here specifically, but from similarly sized and smaller organizations) at only a slightly higher than normal donation rate from someone that was going to be there anyway. You wouldn’t get the older ladies that reunion for the tours - but you would get a pretty custom, private tour of an unusual place.