The series Sesquicentennial (150th Anniversary), 1999 consists of three sub-series: Preparation, Day of Events and Celebration, and Aftermath and Recognition. This includes materials pertaining to committee meetings; events of the actual day such a ball, reception, kick-off ceremny and video show; material that came about after the event had passed, including magazines, articles, memorbilia and pictures.

The series Sesquicentennial (150th Anniversary), 1999 consists of three sub-series: Preparation, Day of Events and Celebration, and Aftermath and Recognition. This includes materials pertaining to committee meetings; events of the actual day such a ball, reception, kick-off ceremny and video show; material that came about after the event had passed, including magazines, articles, memorbilia and pictures.