Tower of History
... that when completed in 1968, the Tower of History was the tallest observation tower in the Upper Peninsula of Michigan?
... that when completed in 1968, the <b id="mwBlk"><a href="./Tower_of_History" id="mwBlo" rel="mw:WikiLink" title="Tower of History">Tower of History</a></b> was the tallest <a href="./Observation_tower" id="mwBls" rel="mw:WikiLink" title="Observation tower">observation tower</a> in the <a href="./Upper_Peninsula_of_Michigan" id="mwBlw" rel="mw:WikiLink" title="Upper Peninsula of Michigan">Upper Peninsula of Michigan</a>?