Isabel Cooper
Isabel Cooper Mahaffie (August 22, 1892 – 1984) was an American artist known for her work depicting animals. She was a staff artist for the New York Zoological Association (currently the Wildlife Conservation Society) who participated in multiple research expeditions, such as the Arcturus expedition.
Also recorded as Isabel Cooper Mahaffie · Isabel Ruth Cooper · Isabel Ruth Mahaffie · Isabel R. Cooper
Isabel Cooper

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- Name
- Isabel Cooper
- Born
- 22 August 1892
- Birthplace
- Tacoma, Washington, U.S.
- Died
- 1984
- Place of death
- Bethesda, Maryland, US
- Education
- * Bryn Mawr College, 1909–1910
- Known for
- Art depicting animals
- Spouse
- Charles Delahunt Mahaffie
- Nationality
- United States
- Occupation
- painter · scientific illustrator · writer · artist
- Honours
- honorary member
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In this article
Key facts
Key facts
• Name — Isabel Cooper • Other Names — Isabel Mahaffee • Born — 22 August 1892 • Birthplace — Tacoma, Washington, U.S. • Died — 1984 • Place of death — Bethesda, Maryland, US • Education — * Bryn Mawr College, 1909–1910 • Barnard College and Columbia University, 1910–1912 • Arts Student League, 1912–1915 • Employer — New York Zoological Society • Known for — Art depicting animals • Spouse — Charles Delahunt Mahaffie
Biography
Biography
Cooper was born on August 22, 1892, in Tacoma, Washington. She went to Bryn Mawr College from 1909 until 1910 and there she played multiple sports, including hockey, basketball, and water polo. Cooper then studied art at Barnard College and Columbia University from 1910 to 1912. From 1912 until 1915 she studied at the Arts Student League, an art school in New York City that was founded in 1875, and then had private classes with Alon Bement from 1913 until 1917. After graduating from Columbia she worked in multiple jobs including teaching art and science in New York City schools, interior decorating, theater set designing, and rug making. She met William Beebe, the head of the Department of Tropical Research at the New York Zoological Society, and he hired her to work as a staff artist recording the animals found on scientific expeditions, a job she held from 1917 until 1925. Cooper was married to lawyer Charles Delahunt Mahaffie on August 25, 1928, and they had a son, Charles D. Mahaffie Jr. She died in Bethesda, Maryland in 1984.
Work as an artist
Work as an artist
• Illustration — Cooper held live animals, including snakes, so that she could paint them with their living colors and character. Cooper was known for her paintings of animals collected during research expeditions. She painted animals that were still alive in order to best capture their colors and character. Some of the animals were anesthetized first with ether so that they remained still while she painted them. Her first pieces were done with watercolors, and then she changed to using Japanese paper colors and India inks. She made multiple trips while working for the New York Zoological Society including five trips to British Guiana, two trips to the Galapagos, and one trip to Asphalt Lake in Venezuela. The trips to British Guiana were to the research station at Kartabo Point on the Mazaruni River. Her return to the research station was documented in 1920, 1922, and 1924. While at the research station Cooper focused on amphibians and reptiles, especially those that had only previously been preserved as specimens in alcohol. In 1924, Helen Damrosch Tee-Van, Ruth Rose, and Cooper captured a large boa constrictor which caught the attention of the press describing the research expeditions. Her work was shown at a 1921 exhibit at the New York Zoological Society in Bronx Park. Cooper illustrated Beebe's 1924 book Galapagos: World's End which was reviewed favorably by the media. • Illustration — Cooper's illustration of a Galapagos land iguana from Galapagos: World's End Following the 1924 expedition to British Guiana, Cooper wrote an article for The Atlantic Monthly about the challenges she faced in painting animals while in the jungle, and the delight she had in her unconventional job. In the article she described the challenges of painting live animals, some of which managed to escape from their cages while she was working. She later described her job as "the most peculiar job in the world". Cooper participated in Beebe's 1925 Arcturus expedition that sailed from New York City on February 11, 1925. The expedition went from New York to the Sargasso Sea to the Galápagos Islands, and then returned to New York on July 30, 1925. Even though Cooper got seasick on boats, she generated illustrations during the cruise and used a diving bell to go under the seawater. The Arcturus expedition was widely shared in the press, and even when they were out of contact news stories about the expedition were published. The news coverage included multiple pictures of Cooper and the other people on board. Multiple women were part of the research crew including Marie Poland Fish, Ruth Rose, Helen Damrosch Tee-Van, and Lillian Segal. This was unusual for the time and William Beebe's involvement of the women in research expeditions was highlighted in the news. Before sailing on the Arcturus expedition, Beebe noted that he preferred working with women and that "If it were feasible I would have my entire scientific party made up of them... Fine minds are as necessary in modern research exploration as fine courage. It is easier to find fine women than fine men." • Illustration — Cooper painting during the 1925 Arcturus expedition. Cooper ultimately provided the illustrations for Beebe's book The Arcturus Adventure, and The New York Times reported "Isabel Cooper's colored plates are gorgeous." She also provided illustration for scientific papers on crustaceans, and illustrated David goes voyaging, the children's book about the twelve-year old David Putnam's participation in the Arcturus expedition. Cooper's later artistic works include painting a jungle-themed guest room in the Rye, New York home of George Putnam and Dorothy Binney Palmer. In 1926 there was an exhibit of Cooper's watercolors at the Corcoran Gallery of Art in Washington, D.C. From 1927 until 1931 she made art plates for Encyclopedia Britannica which included insectivorous plants.
Places
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
Tacoma.
Birth place
Bethesda.
Death place
Awards and honors
In 1922 she was named an honorary life member of the New York Zoological Society. Two species of moths have been named after Cooper: Cirphis cooperi and Paectes isabel.

Isabel Cooper, artist for Beebe
The Modern Review. January 1925

The Arcturus adventure: an account of the New York Zoological Society's first oceanographic expedition / by William Beebe... with 77 illus. from colored plates, photos. and maps, published under the auspices of the Zoological Society.
Beebe, William
Text attribution
Licensing
Text attribution
Part of the biographical narrative on this page reuses licensed material. Its origin, revision and licence are recorded here.
The biographical narrative on this page is based on the Wikipedia article Isabel Cooper, revision 1374333959 (EN edition), by its contributors. VALÉORINE has edited that text and built its own documentary record around it. The reused material is available under CC BY-SA 4.0, and this page's reuse of it is offered under the same licence. Everything else on this page — the chronology, the holdings, the evidence, the plates and the connections — is VALÉORINE's own record. Sources and licences.
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Cambridge University Press. Dictionary of international biography: Part II (K–Z). 11. 1106. 1975.
- 2.McMahan, Virgil E. The Artists of Washington, D.C., 1796–1996. Artists of Washington. 1995. 978-0-9649101-0-2.
- 3.Bryn Mawr College. Alumnae Association. Bryn Mawr Alumnae Bulletin, 1934. Bryn Mawr, PA: Bryn Mawr Alumnae Association. 13. 1934.
- 4.Gould, Carol Grant. The remarkable life of William Beebe : explorer and naturalist. Washington, D.C. : Island Press/Shearwater Books. 2004. 978-1-55963-858-6.
- 5.Saunders, John Monk. Jungle creatures 'sit' for her in their own back yards. The American Magazine. Crowell-Collier Publishing Company. 101. 26, 27, 112, 114, 116. 1926.
- 6.James T. White & Co. The National Cyclopaedia of American Biography. 54. 616. 1973. 0-88371-000-5.
- 7.Commerce, United States Congress Senate Committee on Interstate and Foreign. Mahaffie Nomination to Interstate Commerce Commission, 1952. U.S. Government Printing Office. 1952.
- 8.Cooper, Isabel, 1892–1984 Wildlife Conservation Society Archives. wcsarchives.libraryhost.com.
- 9.Adams, Mildred. The Jungle Lady. The Woman Citizen. Open Court Publishing Co. 6. 22. 11. March 25, 1922.
- 10.Osborn, Henry Fairfield. Fourth Year of the Neotropical Research Station. Science. 51. 1328. 585–587. 1920. 0036-8075.
- 11.Exploratory Works: Drawings from the Department of Tropical Research Field Expeditions by The Drawing Center – Issuu. issuu.com. 2017.
- 12.Photos. The New York Times. RPA2. August 3, 1924.
- 13.Love, or Life of Adventure. The Philadelphia Inquirer. 26,27,112. February 21, 1926.
- 14.Clipped From The Montgomery Advertiser. The Montgomery Advertiser. 35. September 21, 1924.
- 15.Three girls, unaided, take huge boa in jungle. The Washington times. (Washington [D.C.]). 16. August 27, 1924. 1941-0697.
- 16.Children romp at lawn party in Bronx Zoo. The evening world. [volume] (New York, N.Y.). 3. May 20, 1921. 1941-0654.
- 17.Ravenel, Herbert. A Glittering Book. Saturday Review. Omni Publications International. 2. 47. June 19, 1926.
- 18.Cooper, Isabel. Wild-animal painting in the jungle. The Atlantic Monthly. 133. 732–743. June 1924.
- 19.Evening star. [volume] (Washington, D.C.) 1854–1972, April 22, 1925, Image 2. 2. April 22, 1925. 2331-9968.
- 20.Beebe, William. The Arcturus adventure : an account of the New York Zoological Society's first oceanographic expedition. Putnam. 1926.
- 21.Beebe Teevan etc. go missing on the Arcturus. Daily News. 14. April 11, 1925.
- 22.Illustrated London News. Women as Scientific Explorers: The Sargasso Sea Expedition. The Illustrated London News. 166. 4486. April 11, 1925.
- 23.Cohen, Gene. Women plan to chart 'port of missing ships' and to strip Sargasso Sea of its secrets. Americus times-recorder. [volume] (Americus, Ga.). 10. November 21, 1924. 2768-6922.
- 24.Some Artists With Futures. The New York Times. June 6, 1926. 0362-4331.
- 25.Beebe, William. The Arcturus Adventure: An Account Of The New York Zoological Society's First Oceanographic Expedition. 1926.
- 26.Duffus, R. 'Arcturus', Whither Away?; Mr. Beebe Reports His Latest Adventure in Science 'The Arcturus Adventure.'. The New York Times. May 23, 1926. 0362-4331.
- 27.Lee Boone. The littoral Crustacean fauna of the Galapagos Islands. Part I Brachyura. 1927.
- 28.National Council of Teachers of English Conference on College Composition and Communication. The Elementary English Review. 17. 6. 1940.
- 29.A home that was built without an architect's blueprint. Midweek Pictorial. 22. 18. 14. December 24, 1925.
- 30.Mechlin, Leila. Notes of Art and Artists. Evening star. [volume] (Washington, D.C.). 4. January 31, 1926. 2331-9968.
- 31.Mechlin, Leila. Notes of Art and Artists. Evening Star. [volume] (Washington, D.C.). 4. January 24, 1926. 2331-9968.
- 32.Balfour, Isaac Bayley. Botany, the science : a selection of articles from the new 14th edition of the Encyclopaedia Britannica. New York : Encyclopaedia Britannica. 1929.
- 33.Schaus, William. Galapagos Heterocera with description of new species. Zoologica: Scientific Contributions of the New York Zoological Society. 5. 2. 22–48. 1923. 10.5962/p.190329.
References
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reference work
Secondary witnessreference work
Secondary witness
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 26 August 2026.
Elsewhere in Paintings
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