Suture, Young's Silkworm Gut, W. D. Young & Co., Inc. Cardboard box contains a coil of "Young's Silkworm Gut". The label on the lid of the box reads "YOUNG'S SILKWORM GUT / SELECTED QUALITY / MEDIUM / Date of Contract, July 30, 1917 / W. D. Young & Co., Inc. / Manufacturers of / RAW and STERILE CATGUT / Boston / U.S.A."