The Muscatine County Freedom Rock was unveiled in 2020:
https://discovermuscatine.com/muscatine-county-freedom-rock-dedicated/
https://www.kwqc.com/2020/09/07/muscatine-county-freedom-rock-dedicated-in-wilton-sunday/
https://westlibertyindex.com/stories/muscatine-county-freedom-rock-tells-local-stories,76140?