- E-bookLooking at the Cat:An Eye on EvolutionMary Jo Nickum
- E-bookA Girl Named MaryMary Jo Nickum
- E-bookMom's Story, a Child Learns about MSMary Jo Nickum
- E-bookThe Making of the Grand CanyonMary Jo Nickum
- E-bookSéries: Strong WomenMary Jo Nickum
- E-bookOlympic National Park, the Wild SideMary Jo Nickum
- E-bookThe California Condor, "The Big Ugly"Mary Jo Nickum
- E-bookValencina, The Ivory WomanMary Jo Nickum
- E-bookValencina, The Ivory WomanMary Jo Nickum
- E-bookDeserts of the WorldMary Jo Nickum
- E-bookEve, the First (Liberated) WomanMary Jo Nickum
- E-bookEve, the First (Liberated) WomanMary Jo Nickum
- E-bookThecla, the First Woman EvangelistMary Jo Nickum