http://www.Tandy.com is down, but, that have a page that looks like it hasn't changed since 1984 at http://support.tandy.com/
I'm assuming they bought directly from ICANN seeing as probably only a handful of domains were registered per year at that time. Probably at an insane cost to, like $1000. But if ICANN had their way thats what the cost would be today. Isn't that impossible, since the first domain only came up in 1985?