Artifact Details Title Early Calculating Devices - James L. Dalton Catalog Number 102704306 Type Still Image Description Black and white image. Has two images. Top one is a portrait of James L. Dalton 1855 - 1926. The bottom one is of a Dalton Adding machine. It is hand operated and has a printing mechanism. Nopte above " Hubert Hopkins Inventor" Dimensions overall: 4 in x 5 in Category Photograph Credit Courtesy of Gwen Bell Lot Number X7413.2015