The Joseph K. Hoffman consists of one scrapbook which was presented to William Welch on the occasion of William Welch's 76th birthday, April 8, 1927. This is the second of two scrapbooks given to Welch by Hoffman. The first scrapbook consists of clippings covering the period 1925 to 1926 and was presented to Welch on the occasion of his 75th birthday. This scrapbook can be found in the Welch papers (Box 187). Both scrapbooks contain clippings primarily related to the Johns Hopkins University and the Johns Hopkins Hospital, but also include science topics.