Corwin Minnequa School of Nursing Hospital Pin. (a) Pin. Material: metal. Size: 1" diameter. Description: gold pin; gold and blue background; gold and blue print: "Minnequa School of Nursing, Hospital, Corwin"; clasp at back; engraved on back: "Marion Evelyn Holbrook." (b) Case. Material: plastic, textile. Size: 1 1/2" x 1 1/2". Description: clear plastic case; black velvet padding on bottom.