Boitano (not Orser) had a quad. He attempted at Worlds in 87 and 88.
I know Boitano had a quad. I'm told Orser *also* had a quad but he never really needed it when he was competing, so he just practiced it "just in case." I was told that on practice ice in Cincinnati in 1987, they had some sort of springy material under the ice and that everyone who could was landing quads. Which included Orser. I think this was what Kurt was talking about to Alissa Czisny when they (the ESPN coverage) showed him relating an anecdote about landing 5 or 6 quads, and Brian Orser landing a quad, and how competitive everyone got in practice.