Pan American Commerce: Past-present-future, from the Pan American Viewpoint. Report of the Second Pan American Commercial Conference Held in the Building of the Pan American Union, Washington, D. C., June 2-6, 1919. A Summarized Report Based on the Stenographic Record of the Proceedings, Addresses, Papers, and Discussions, Together with Additional Data, Lists of Those in Attendance Or Represented, Charts, Illustrations, Etc