Biographical dictionary of Rocky Mountain naturalistsJoseph Andorfer Ewan, Nesta Ewan · First published 1981Open the Tome
John Banister and his natural history of Virginia, 1678-1692Joseph Andorfer Ewan · First published 1970Open the Tome
The evolution of biology. By M. J. Sirks and Conway Zirkle [review]Joseph Ewan · First published 1965Open the Tome
Synopsis of the South American species of Vismia (Guttiferae)Joseph Andorfer Ewan, Joseph Ewan · First published 1962Open the Tome
A review of Purdieanthus and Lehmanniella, two endemic Colombian genera of Gemtianaceae, and Biographical notes on Purdie and LehmannJoseph Ewan · First published 1948Open the Tome
The perennial southwestern Datura and the validity of Matthew's hypothesis in plant geographyJoseph Andorfer Ewan · First published 1944Open the Tome
