Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 2007)

Memoirs of the New York Botanical Garden - New York Botanical Garden (The Garden, 1961)

Memoirs of the New York Botanical Garden - New York Botanical Garden (The Garden, 1961)

Memoirs of the New York Botanical Garden - New York Botanical Garden (The Garden, 1965)

Memoirs of the New York Botanical Garden - New York Botanical Garden (The Garden, 1965)