Artists conserved by Morgan Hayes:
Aimee Gorham | Albert Pinkham Ryder | Barry Faulkner | Charles Fries | Colista Murray Dowling | C.S. Price | Dudley | Edgar Payne | Edward Dugmore | Ferdinand Bol | Gail N. Moulton | Giovanni Paolo Panini | Grant Wood | Hans Richter | Helen Lundeberg | John McLaughlin | John Singer Sargent | Julien Dupré | Leon Kroll | Leon Réni-Mel | Louis Bunce | Luca Giordano | Mark Flores | Michele Garinei | Michael Dailey | Micheil Claesz | Morris Hall Pancoast | Morris Louis | Otto Dix | Ralph Albert Blakelock | René Magritte | Rufino Tamayo | Sydney Laurence | Théodore Caruelle D'Aligny | William Cahill | William Goodell
as well as anonymous artists from various schools and genres, including 16th-century Flemish, 17th-, 18th-, and 19th-century Spanish Colonial, and 19th-century American Folk.
Artworks treated by Morgan Hayes are held in these collections:
Portland Art Museum, Portland, OR
Hallie Ford Museum of Art at Willamette University, Salem, OR
Ronna and Eric Hoffman Gallery of Contemporary Art at Lewis & Clark College, Portland, OR
University of Oregon, Eugene, OR
Concordia University, Portland, OR
Anchorage Museum, Anchorage, AK
Los Angeles County Museum of Art, Los Angeles, CA
Natural History Museum of Los Angeles, Los Angeles, CA
Santa Barbara Museum of Art, Santa Barbara, CA
Laguna Art Museum, Laguna Beach, CA
San Diego Museum of Art, San Diego, CA
Museum of Contemporary Art San Diego, La Jolla, CA
Timken Museum of Art, San Diego, CA
The San Diego History Center, San Diego, CA
San Diego Air & Space Museum, San Diego, CA
The City of San Diego, CA
Mission San Luis Rey, Oceanside, CA
Mission San Juan Capistrano, San Juan Capistrano, CA
as well as privately held collections.