It is perhaps interesting to note (irony of ironies or poetic justice?) that during the several months of the current project to replace the roof and restore the cupola at Nassau Hall, with scaffolding and fencing surrounding the entire building, the almost 150-year history of class ivy stones at Princeton University on the exterior of Nassau Hall will not be viewable. 

During this period, the only class stones that will be visible on campus are those recently installed along two walkways in front of Nassau Hall of the 17 older classes (ranging from 1946 to 2006) without a marker on the building as well as the Class of 2018 — the new Princeton tradition.

Charles Plohn Jr. ’66
Princeton, N.J.