sentences:  His photographs of Native Americans and their culture have been exhibited worldwide, William Zimmer writes that "the respectful Indian pictures bring to light aspects of [Native American] culture that are often hidden".David’s works are held in many private and museum collections, including The National Portrait Gallery, The Smithsonian Institution, The New Mexico History Museum, The Wittliff Collections, The Southwestern & Mexican Photography, Collection of Texas State University and The Harwood Museum of Taos, NM.David teaches one on one workshops in Platinum/Palladium Printing, Landscape and Portraiture.