Schneck, D. D. (2013). Letters from a Montana sheep man: The true tale of Isaac S. Schultz who survived the blizzards of 1886-87 --- and why he went missing for 44 years (First edition, May 2013.). Staunton, Virginia: [publisher not identified].

Schneck, Darlene Della. Letters From a Montana Sheep Man: The True Tale of Isaac S. Schultz Who Survived the Blizzards of 1886-87 --- and Why He Went Missing for 44 Years. First edition, May 2013. Staunton, Virginia: [publisher not identified], 2013.

Schneck, Darlene Della. Letters From a Montana Sheep Man: The True Tale of Isaac S. Schultz Who Survived the Blizzards of 1886-87 --- and Why He Went Missing for 44 Years. First edition, May 2013. Staunton, Virginia: [publisher not identified], 2013.