- EbookThe Making of the Grand CanyonMary Jo Nickum
- EbookLooking at the Cat:An Eye on EvolutionMary Jo Nickum
- EbookA Girl Named MaryMary Jo Nickum
- EbookMom's Story, a Child Learns about MSMary Jo Nickum
- EbookSeries: Strong WomenMary Jo Nickum
- EbookOlympic National Park, the Wild SideMary Jo Nickum
- EbookThe California Condor, "The Big Ugly"Mary Jo Nickum
- EbookValencina, The Ivory WomanMary Jo Nickum
- EbookValencina, The Ivory WomanMary Jo Nickum
- EbookThecla, the First Woman EvangelistMary Jo Nickum
- EbookEve, the First (Liberated) WomanMary Jo Nickum
- EbookEve, the First (Liberated) WomanMary Jo Nickum
- EbookDeserts of the WorldMary Jo Nickum