British Museum | Museum of Modern Art | Metropolitan Museum of Art | American Museum of Natural History | Victoria and Albert Museum | Natural History Museum | San Francisco Museum of Modern Art | Honolulu Museum of Art | museum | Whitney Museum of American Art | Museum of Fine Arts, Boston | Los Angeles County Museum of Art | Solomon R. Guggenheim Museum | National Air and Space Museum | Brooklyn Museum | National Baseball Hall of Fame and Museum | Hermitage Museum | National Museum of Racing and Hall of Fame | Museum of Contemporary Art | Field Museum of Natural History | mint | Philadelphia Museum of Art | Imperial War Museum | Smithsonian American Art Museum | National Museum | United States Mint | National Museum of Natural History | Museum of Fine Arts, Houston | Denver Art Museum | Cleveland Museum of Art |
His paintings are represented in more than two dozen public collections including the Brooklyn Museum, the Philadelphia Museum of Art, the New Britain Museum, the Mint Museum, the Denver Art Museum, the National Museum of American Art, the Delaware Art Museum, the Columbus Museum and the National Portrait Gallery.
Machado and Silvetti's notable projects include the Bowdoin College Museum of Art, the Sam M. Walton College of Business at the University of Arkansas, The Getty Villa, the Boston Public Library's Honan-Allston Branch, the Provincetown Art Association and Museum, Utah Museum of Fine Arts, the Mint Museum, and One Western Avenue at Harvard University.
Biggs' video work has been recently presented at Musée d'art contemporain de Montréal, the Hirshhorn Museum and Sculpture Garden (Washington, DC), Glaskasten Marl Sculpture Museum (Marl, Germany), the Mint Museum (Charlotte NC), the Gibbes Museum of Art (Charlotte, NC), the McNay Museum (San Antonio, Texas), the Herbert F. Johnson Museum of Art (Ithaca, NY), Videonale 13 (Bonn, Germany) and tbe Perth Institute of Contemporary Arts.