June 12, 1964, Letter from Roy Wilkins, Executive Secretary of the National Association for the Advancement of Colored People, to Senator Everett McKinley Dirksen.June 12, 1964Wilkins, Roy, 1901-1981http://rightsstatements.org/vocab/InC-EDU/1.0/enghttp://congressarchives.org/record/EMD_Working_Papers-f259-1964_06_12Letter From Roy Wilkins, Executive Secretary Of The National Association For The Advancement Of Colored People, To Senator Everett Mckinley Dirksen Thanking Senator Dirksen For Voting For Cloture On The Civil Rights Bill.