In the 1940s, 50s and 60s, Peace Corps volunteers, American Embassy employees, US servicemen and their wives, as well as tourists and several Hollywood actors picked out a Cesar Buenaventura nine times out of 10, including Frank Sinatra, Bob Hope and George Montgomery. Works included in PAG's first contemporary exhibit abroad to the Carnegie Endowment Center and Washington D.C, 1964 for the Washington State Fair and the NY World's Fair representing the country, and also to Berne and Zurich Switzerland in 1965, where his work was chosen best in exhibit. In 1955, he was chosen one of the country's Top Ten Artists. Buenaventura's greatest achievement is that his paintings were known as unofficial "Ambassadors of Goodwill" for the country in the visual arts. Hundreds of living rooms abroad display his works.