Early 19th Century:
Lowell Mills
The Condition of the Operatives
Editorial, The Lowell Offering
The Female Workers of Lowell, 1836
"A Second Peep at Factory Life," Lowell Offering, 1845
"Pleasures of Factory Life", 1840
Mill Girls Protest Resolutions
Rules of the Mills

Late 19th Century; Unions
Mother Jones
The Miners' Angel
An Article by MoJo
Eugene Debs tribute to Mother Jones

Knights of Labor
When Women were Knights
Race and Racism, 1886 Convention

AFL/CIO
Samuel Gompers on Labor Topics
Speech in Kentucky, May 1, 1890

Late 19th Century; Issues and Demonstrations
Food Strikes: Lower East Side Manhattan
Dana Frank, "Housewives, Socialists, and the Politics of Food: The 1917 New York Cost-of-Living Protests," Women and Power in American History, vol. II from 1870 pp. 101-114.
Triangle Shirtwaist Factory Fire
Child Labor: Jacob Riis

20th Century
Rosie the Riveter/Black labor WWII
Great Depression - migrant
Cesar Chavez

Current Issues:
NYT article about Andy Stern
US eco influence (Hawaii, West Indies, Central America)
multi-national corporations
off-shoring
NAFTA