https://china.usc.edu/catherine-gao-usa-pavilion-student-ambassador
Catherine Gao - USA Pavilion Student Ambassador | USC China
USA Pavilion Student Ambassador from the University of Southern California, now serving at the 2010 Shanghai World Expo
usa pavilionstudent ambassadorcatherinegaousc
https://www.pavilion2012.org/2012/04/
2012 April Archive - USA Pavilion Expo 2012
usa pavilionaprilarchiveexpo