New Estimates of Paid-up Membership in the United Mine Workers, 1902–29, by State and Province

Abstract

This report offers new estimates of paid-up membership in the United Mine Workers from 1902 to 1929, derived from the international union's per-capita tax receipts. The estimates represent an improvement because they include more years and more states than previous estimates. More importantly, the new estimates disaggregate the grouped data presented in other sources to the state level. Disaggregation allows researchers to match these estimates to state-level data on the coal industry in other sources.

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