Letter from A. F. Potter to Carl T. Hayden describing John H. Page's request to build a railway for the Canyon Copper Company as "impractical."

This paper develops and implements an import allocation model based on Theil's system-wide approach to demand and tests the assumptions of blockwise dependence and uniform substitutability among different sources and types of wheat imported by Japan.

Using annual Japanese fresh fruit import data from 1971-1997, this study analyzes the import patterns of Japan's seven most popular fresh fruits by implementing and testing a general differential demand system that nests nested four alternative import demand specifications.