Author:Helen Ingersoll
United States naturalist, daughter of naturalist Ernest Ingersoll.
Works edit
- "Beach Plants," in The Encyclopedia Americana, New York: The Encyclopedia Americana Corporation (1920)
- "Birds, Plants Attractive to," in The Encyclopedia Americana, New York: The Encyclopedia Americana Corporation (1920)
- "Evergreens," in The Encyclopedia Americana, New York: The Encyclopedia Americana Corporation (1920)
- "Forest Trees of America," in The Encyclopedia Americana, New York: The Encyclopedia Americana Corporation (1920)
- "Forest Trees, Tropical," in The Encyclopedia Americana, New York: The Encyclopedia Americana Corporation (1920)
- "Plants, Ornamental," in The Encyclopedia Americana, New York: The Encyclopedia Americana Corporation (1920)
- "Saffron," in The Encyclopedia Americana, New York: The Encyclopedia Americana Corporation (1920)
- "Sage," in The Encyclopedia Americana, New York: The Encyclopedia Americana Corporation (1920)
- "Sassafras," in The Encyclopedia Americana, New York: The Encyclopedia Americana Corporation (1920)
- "Vallisneria," in The Encyclopedia Americana, New York: The Encyclopedia Americana Corporation (1920)
Some or all works by this author are in the public domain in the United States because they were published before January 1, 1929.
These works may be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.
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