Free trade - United States - History - 20th century.

The tariff : a review of the tariff legislation of the United States from 1812 to 1896 by: McKinley, William (書目-語言資料,印刷品)

American tariff controversies in the nineteenth century by: Stanwood, Edward (書目-語言資料,印刷品)

The tariff in our times by: Tarbell, Ida M. (書目-語言資料,印刷品)

Protective philosophy : A discussion of the principles of the American protection system as embodied in the McKinley Bill by: Rice, David Hall (書目-語言資料,印刷品)

Reciprocity by: Laughlin, J. Laurence; Willis, H. Parker (書目-語言資料,印刷品)