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Original material located at Minnesota State University, Mankato University Archives
Mankato State College, Mary Hammer, clinical instructor in public health:nursing. September 21. 1957.
Mankato State College
University Archives and Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato (contributing organization)
Mankato State College, black and white portrait of Mary Hammer, clinical instructor in public health:nursing. September 21. 1957.
9 x 12
University Photograph Collection, 1868-ongoing. MSU Archives 309.