Still have my WorldPass Platinum card! Yes, the service center was out of Alexandria VA I believe. It took only 30,000 miles a year to reach the top level - Platinum. Back in the day, there weren't that many partners...AA
was a partner a brief while, as was UA
(a semi-partner, around the time of the route purchases). They pretty much had complimentary domestic upgrades for Platinums X hours before departure, as well as international upgrades from any Y fare.
They also had a fantastic award for either 120K or 150K (I forget) where you could get 2 Free First Class tickets on Pan Am for 30 days to fly all around Pan Am's world (this was before the Pacific route sale even, so you could practically go to six continents on PA on this award).