| Author's List |
| title | creator | language | description | tableOfContents | contributor | subject | created |
| Men's Sewed Straw Hats Report of the United Stated Tariff Commission to the President of the United States (1926) | Commission, United States Tariff | en | 2006-12-06 | ||||
| Die Gründung des Deutschen Zollvereins | Treitschke, Heinrich von, 1834-1896 | de | Tariff -- History -- Germany; Customs unions -- Germany -- History; Deutscher Zollverein | 2007-10-17 |