 In 1992, he directed and participated in the first exhibit by U.S. photographers in Vietnam since the end of the war; and in fall 1994, he presented the first exhibit by Vietnamese photographers to show in the United States as well.His work has been exhibited on four continents and in 2007 he received a grant from the Open Society Institute to exhibit his work from the Ecuadoran Amazon in the communities in Ecuador most affected by the contamination left in the region as a result of Texaco's oil extraction practices.His bilingual book on the subject, "Crude Reflections/Cruda Realidad" was published in 2008 by City Lights Books.