Thank you for taking the time to look! As far as Joyce (my great-grandmother) goes, I have all the info I need on her. What isn't known is anything about Robert (I don't even have an exact DOB for him, nor do I know when he died, that is, IF he died...).
I do already have the enlistment records on Robert, as well as the census records for 1920, 1930, and 1940. I'm *assuming* that Robert and Joyce married after meeting in the army (Joyce served as a nurse during WWII), though I don't know if they married in Missouri, Arkansas (where Joyce is from), or Iowa. After the enlistment record dated June 1942, there is no other information on him.
I'm beginning to think he may possibly have passed away anywhere between 1948 and 1950, because Joyce remarried and had another daughter in 1951.