Clio Hall was added to the Princeton University campus in 1893. Today the building is still active as the home of the University Personnel and Career Services. In 2005, Masonry Preservation Group, Inc. was commissioned by Princeton University to build an addition to historic Clio Hall. This new addition was constructed of CMU material that was covered with a cut marble cladding to match the original building surface. The new addition and associated work was completed on time and on budget.