Caption: Regenstein Library celebrates 25 years

President Sonnenschein presents a "Reg Rat" T-shirt to Joseph Regenstein Jr. at a celebration last week of the library's 25th anniversary. The anniversary is commemorated in "Building Collections: Celebrating 25 Years of the Joseph Regenstein Library," through Jan. 5 in the library's Department of Special Collections. The Regenstein Library, which honors the memory of Joseph Regenstein (1889-1957), an industrialist and lifelong Chicago resident, was constructed with a $10 million gift from the Joseph and Helen Regenstein Foundation.