Clinton T. Willour has served as curator at the Galveston Arts Center since 1990, in addition to operating as executive director from 1995 to 2004. Prior to that, he worked as an independent curator, owner, and director of private galleries in Houston.

Over the past 30 years, he has curated more than 60 exhibitions for profit and non-profit institutions. These include David Mirvish Gallery, Toronto; Tibor deNagy Gallery, New York City; Mattingly/Baker Gallery, Dallas; Glassell School of Art, The Museum of Fine Arts, Houston; Contemporary Arts Museum, Houston; Centro Cultural Borges, Buenos Aires; The Museum of Fine Arts, Houston; and the Austin Museum of Art.

From 1980 to 2005, Willour was one of the most important benefactors of the Museum of Fine Arts in Houston, TX. Donating 976 photographs, prints, drawings, paintings, and sculptures to his name, the museum estimates the collection is currently worth about a million dollars.

Additionally, he has served as a juror for more than 50 exhibitions and competitions and has lectured and participated in panels and symposia throughout Texas and across the country.