APPENDIX I

World Rubber Production1905-1922 (percent)

Source: James Cooper Lawrence, The World’s Struggle with Rubber (New York & London, Harper & Bros., 1931), p. 31.

APPENDIX II

The World’s Rubber Requirements, 1922(a conservative estimate, in tons)

Source: Harvey S. Firestone, America Should Produce Its Own Rubber (Akron, OH: Harvey S. Firestone, 1923), p. 13.

APPENDIX III

New York Price Quotations for Crude Rubber(price per pound)

Sources: Bradford L. Barham and Oliver T. Coomes, Prosperity’s Promise: The Amazon Rubber Boom and Distorted Economic Development, Dellplain Latin American Studies, no. 34, David J. Robinson, ed. (Boulder, CO: Westview Press, 1996), p. 31; Harvey S. Firestone, America Should Produce Its Own Rubber (Akron, OH: Harvey S. Firestone, 1923), p. 17.