I finished making my way through the Find-A-Grave site for the St. James Cemetery in St. Paul, Lee County, Iowa. It ends up I don't have 75%+ of the people buried there in my database. I "only" have about 43%. I'm confident that several more of them are actually connected given their surnames but I can't confirm a connection. Regardless, this expedition allowed me to add dozens of headstone photos to people in my extended family tree.