• 4 Wisconsin Historical Society Archives
• 4 Wisconsin Historical Society Library
• 1 WHS State Archives Preservation Facility

• 15 Journals, Magazines, Newspapers
• 2 Microforms

• 4 Puerto Ricans
• 1 Hispanic Americans
• 1 Hispanics
• 1 Navy-yards and naval stations
• 1 Newspapers
• 1 Social conditions
• 1 Working class

• 1 Comité--Movimiento de Izquierda Nacional Puertorriqueño

• 7 English

• 13 San Juan (P.R.)
• 3 Ponce (P.R.)
• 2 Caguas (P.R.)
• 1 Ceiba (P.R.)
• 1 New York
• 1 New York (N.Y.)
• 1 New York (State)
• 1 New York County (N.Y.)
• 1 Toa Baja (P.R.)

Limit year range