The cost of printing large size currency is to expensive! The Treasury Department in the 1920’s was purchasing allot special paper to print currency. They realized that the cost of printing large size notes was costing a premium and realized that millions would be saved if they reduced the size of the notes. On July 10, 1929 the first of the smaller sized notes were printed and put into circulation. The Legal Tender, Gold Certificates, Silver Certificates, Federal Reserve Notes, and National Banks Notes were the first small size notes printed. Enjoy, Jeff http://www.treasuredstocks.com/tips-and-news/jeffs-corner.html