Most of the stuff was ancient notes and data sheets and got discarded.

Water Heaters are all ancient, but still operational, heating systems are ancient, but all still operational, when I say ancient, I mean 20 years old.

That just seems like ancient history.

It is sort of Greek to me.

@Ben Julius:  Thanks so much - I'm definitely going to give it a try, it appears the city records are ancient history.  

. , I'm guessing you acted quickly and were able to find dehumidifiers, I was at work and by the time I got out it was such a mayhem and I still can't find humidifiers anywhere unless I travel way out of my area, luckily only one house didn't have a dehumidifier and a friend let me an ancient one but it works!

The layout is terrible, and the cabinets, though in good shape, are ancient.

If the place shows well and people can view themselves living there, then they will buy it and do what they want with it and you will both be happy.One more thing - not everyone thinks of 1994 as ancient history. 

Is it ancient?

It's a Greek Revival style building originally constructed in 1845.