Ball State University is known for its innovative green designs, such as the nation's largest closed geothermal system. Here, in an undated photo circa 1990, are College of Architecture and Planning students wearing green roof mortarboards at graduation.
To all of this year's CAP graduates, congratulations!
Image: Graduation photograph, ca. 1990. College of Architecture and Planning Collection, Drawing + Documents Archive, Archives and Special Collections, Ball State University Libraries.