John McGregor worked at Expo 1988 Brisbane, Expo 1992 Seville, and Expo 1993 Daejeon. Following a meeting of Expo cities and regions in Seville in 2002, he launched a commemorative website for Expo 1988 Brisbane in 2004, which he now runs and maintains at celebrate88.com. He currently resides in the Gold Coast, Queensland.

Knute Berger is a Seattle-based author, journalist, and commentator with a longstanding interest in Expos. He is the award-winning "Mossback" columnist for the Cascade Public Media news site Crosscut.com, Writer-in-Residence at the Space Needle, where he serves as consulting historian, and Editor-at-Large for Seattle magazine. He has written several publications including “Space Needle, Spirit of Seattle”, and is a regular commentator on public radio.

Urso Chappell is a San Francisco-based designer, writer, and consultant. Born on the former site of the 1904 World's Fair in St. Louis, he has attended nine expos thus far. In 1998, he founded ExpoMuseum.com. As a designer, he was the winner of Expo 2005's Linimo Design Contest in 2004. He has reported on various expos and consults for future expos and expo bids.