"Archived copy". contentdm.unl.edu. Archived from the original on 4 November 2013. Retrieved 26 January 2022.{{cite web}}: CS1 maint: archived copy as title (link)
unl.edu
contentdm.unl.edu
"Archived copy". contentdm.unl.edu. Archived from the original on 4 November 2013. Retrieved 26 January 2022.{{cite web}}: CS1 maint: archived copy as title (link)