100 Years of the Arb: Digging up History in the College Archives

4 September 2026
A black and white historical photo of people ceremoniously planting a tree in the arb in 1927
Members of the class of 1927 planting the ceremonial first tree in the Carleton Arboretum
Carleton College Archives

The Cowling Arboretum, or “the Arb,” has a rich history — from Dakota stewardship, through the beginnings of Northfield and Carleton College, to today’s focus on restoration ecology. Initially proposed by botany professor Harvey Stork, it was established by College President Donald Cowling and built largely on the early labor of Dresdon Blake Stewart, better known as “Stewsie,” who served as superintendent of grounds for more than 50 years.

For a century now, Minnesota’s first arboretum (affectionately known as “the Arb”) has played an integral role in education, conservation, and recreation for Carleton and the Northfield community. Over the years, its mission and priorities have evolved and the land has seen a variety of uses, some of which might surprise students today (horses, anyone?). Thanks to the vision of its founders, the commitment of the college, and the hard work of its many stewards over the years, the Arb has become a beloved and ecologically diverse landscape central to Carleton’s identity and a treasured resource for all.

Organized in conjunction with other campus celebrations, this exhibit features materials from the College Archives ranging from the Arb’s nineteenth-century roots through subsequent growth and evolution as we celebrate this milestone.

Visit the Arb’s website to learn more!

Please join us on November 4th at noon to see the exhibit and learn from Eric Hillemann about the history of the arb.

Four students gather around a small tree they have planted in the arboretum
First year students with the tree they planted during New Student week 2025