Joseph Andorfer Ewan (1909–1999) was an American botanist, naturalist, and historian of botany and natural history.
[3] Joseph Ewan grew up in Los Angeles and developed an early interest in the study of nature.
[8][2] ... there are his many contributions to The Dictionary of Scientific Biography where ones finds, among others, sketches of George Engelmann, Albert Spear Hitchcock, Elmer Drew Merrill, Frederick Pursh, and the irascible Constantine Samuel Rafinesque.
[2]During their long marriage, Mr. and Mrs. Ewan collected about 4,500 books[3] and huge numbers of "offprints, newspaper clippings, photocopies, correspondence, documents and manuscript notes.
"[2] In 1986 the Missouri Botanical Garden purchased the collection and in 1997 published (and placed on-line) a Guide to the Ewan Papers which lists about 10,000 names.