Joey San Agustin was a curator of the Guam Museum from 1994 until his passing in 2001. Initially hired in 1990, San Agustin created many Guam Museum presentations, booklets and exhibits on historical and cultural legacies of Guam and presented them at local public schools. He also developed cultural exhibits that were displayed at hotels and at other public events. San Agustin most notably created exhibits commemorating the 80th anniversaries of the Guam Congress, the first Guam Fair, the Guam Militia, and the scuttling of the German ship SMS Cormoran II, which all occurred in 1917.

Additionally, for several years, San Agustin organized the annual competition among Government of Guam departments on CHamoru history and language held at the CHamoru Village.

In 1998 San Agustin won the Maga’låhi Award in the support category for the many outreach programs of the Guam Museum that year. The Maga’låhi Award is organized by the Guam Council on the Arts and Humanities Agency, Government of Guam.