Abstract Consists of historical data compiled from 2010 through 2013 by Bruce Lau, Secretary-Treasurer of Roofers and Waterproofers Union, Local 40 in San Francisco. Data spans the years from 1900 to 2013. Includes statistics related to active and expelled members, Local 40 officers, international presidents, business agents, a history of wage scale increases for journeyman workers in Local 40, and two CD-ROMs of The Journeyman Roofer and Waterproofer magazine covering the...