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UN( STATES DEPARTMENT OF J/5" 7E FEDERAL BUREAU uF INVESTIGATION San Antonio, Texas "Heit Plesen Refer w October 2, 1967 hee Title ACTIVITIES CONCERNING FARM ; oe e WORKERS STRIKE AT RIO GRANDE . CITY, TEXAS DEMONSTRATION PROTESTING UNITED STATES INTERVENTION IN VIETNAM Character Reference San Antonio memorandum cated and captioned as above. . All sources (except any listed below) whose identities are concealed in referenced communication have furnished reliable information in the past. SA T=6 who has furnished both reliable and unreliable information. This document contains neither recommendations nor conclusions of the FBI. It is the property of the FBI and is loaned to your agency; it and its contents are not to be distributed outside your agency.