BiblioVault may have an electronic file which would meet your requirements for this title:
Mice in the Freezer, Owls on the Porch: The Lives of Naturalists Frederick and Francis Hamerstrom
Helen McGavran Corneli and George Archibald
Paper: 978-0-299-18094-2
Cloth: 978-0-299-18090-4
Electronic: 978-0-299-18093-5