Fr. Irenaeus is most well known for his tenure as head librarian of Friedsam Memorial Library at St. Bonaventure University. He enlightened all that inquired, and believed:

"that by being gracious to visitors and patrons, it provides an opportunity of showing appreciation for what has been provided, and gratefulness to those who have been generous to St. Bonaventure University."

Father Irenaeus Herscher left a legacy at St. Bonaventure University. The love he shared for his school and the Franciscan way of life was evident in all things he did. Anyone who knew Fr. Irenaeus, or knows of him, knows that his admiration for life and learning was unmistakable. He touched all those who knew him and will continue to influence the St. Bonaventure Community for years and years to come.