His work is in the permanent collections of the Museum of the City of New York, the New Britain Museum of American Art, and the Florence Griswold Museum.
Samuel Belcher, architect of the Old Lyme Congregational Church, designed the late Georgian-style house for William Noyes.
In 2013, the Florence Griswold Museum in Old Lyme, Connecticut presented "Harry Holtzman and American Abstraction", a retrospective of Holtzman's work divided into three periods: Early Abstractions (1928-1934), Pure Plastic Painting (1934-1950), and The First Paintings in History (1950-1987).
Florence | British Museum | Museum of Modern Art | Metropolitan Museum of Art | American Museum of Natural History | Florence Nightingale | 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 | Philadelphia Museum of Art | Imperial War Museum | Smithsonian American Art Museum | National Museum | University of Florence | National Museum of Natural History | Museum of Fine Arts, Houston | Denver Art Museum |
A number of noted American impressionist artists, including Childe Hassam, painted views of the river while staying at the Florence Griswold House in Old Lyme.