 An active figure in the Bay Area art scene for over forty years, Petersen has taught generations of artists not only painting but also printmaking and photography.He lives in the Bay Area and continues to paint actively.Petersen's work has been exhibited in museums and galleries around the country, and is represented in major museum collections, including the Museum of Modern Art, New York City; Whitney Museum of American Art, New York City; San Francisco Museum of Modern Art; Hirshhorn Museum and Sculpture Garden, Washington, D.C.; Fine Arts Museums of San Francisco; and Philadelphia Museum of Art.