Thayer has been honored in over twenty one-person exhibitions in such prestigious galleries as Wildenstein in New York, and Doll & Richards and Vose Galleries in Boston.  Her work is included in twenty public collections including the Museum of Fine Arts in Boston and Springfield, Massachusetts, the Pennsylvania Academy of the Fine Arts, the Fogg Art Museum at Harvard University, the New Britain Museum of American Art in Connecticut, and the DeCordova Museum and Sculpture Park in Lincoln, Massachusetts. Vose Galleries has organized several exhibitions of Polly’s work since reestablishing the gallery’s contemporary division in 2001, and Polly was the only living artist included in the Museum of Fine Arts’ 2001 exhibition A Studio of Her Own, celebrating the many successful women artists active in the Boston area in the late 19^th and early 20^th century.