I can't help you on the springs, but was able to find a few of your names in my DeLorme Missouri Atlas and Gazetteer. I recommend it to anyone doing family research in Missouri. Santa brought mine a few years ago. Bockman Spring is about five miles NW of Greer in Oregon County and about that far NE of Thomasville near Mc Cormack Lake Recreation area. Mc Cormack Trail is there, too. Clarence is in Shelby Co., about 10 miles SW of Shelbyville. Ther is a town called Everett, but not Everett Chaney in Cass County, about 5 miles NW of Archie. McDowell is in Berry Co. about 5 miles NW of Jenkins. Good luck on the other places.