Greenville, Texas is significant because John Boles, who played Victor Moritz in Frankenstein, was born there. John Boles was also first recognized as an actor in Greenville, Texas. I found this information from Wikipedia. This source is an example of low barriers to entry because anyone with internet connection can edit information or create it on Wikipedia. Mapping this location on COVE adds a grassroots layer to the story because John Boles came from a small rural area in Texas to a Hollywood star. Frankenstein is presented by Universal Pictures which is a very elite studio system. Casting Boles showed representations of small American rural landscape to Hollywood.
Biography
Research: https://en.wikipedia.org/wiki/John_Boles_(actor) and https://www.tshaonline.org/handbook/entries/boles-john
Image: https://www.imdb.com/name/nm0092900/?_ssoLoop=1&newac=true