Hi,
You can contact your local library and ask them for Morton County North Dakota history books and find out what they can find via inter-library loan.
The North Dakota State Historical Society,
http://history.nd.gov/archives/countyrec/mortonrec.html has Morton County microfilm that they'll loan to your local library.
Another source is the Bismarck-Mandan Historical and Genealogical Society,
http://bmhgs.com/aboutus.htm.
You can also post your query about the person on the Message Board where the event took place. Successful Searching!