Ruth got back to me fairly quickly and now I have a useful reference to follow up.

Hello Rebecca —

I’m glad that you found my research interesting. Yes, it was based on my
Ph.D. dissertation which is in the University of Nebraska at Lincoln
library. It is also available through ProQuest which can be found on the
internet. ProQuest can actually send you a digital version of my
dissertation.

No, I have not published anything lately on this topic. I’ve gotten
sidetracked by other interesting topics.

–Ruth
Ruth E. Brown, Ph.D.
associate professor