The U.S. Army Corps of Engineers (USACE) St. Louis District will commence celebrating their 150th Anniversary at the National Great Rivers Museum in Alton, IL, Tuesday, from 11:30 till 12:00. Lt. Col. Jason Sears, Deputy Commander, USACE St. Louis District and Michael R. Morrow, Mayor of Grafton, IL will sign a proclamation in appreciation of the District’s history, partnerships and contributions to the region.