"Meaning & Application of the Federal Statutes Regulating Political Campaign Activities" (Confidential Memorandum, June 23, 1956) prepared by firm of Arnold,Portas & Porter. (Known as Porter Memorandum) "Minnesota Poll, Release of December 3, 1961, Minneapolis Sunday Tribune, '72% Oppose Federal Funds for Candidates Seeking Presidency'" President's Commission on Campaign Costs, Staff Memorandum: "Congressional Recommendations Since 1941", December 14, 1961 President's Commission on Campaign Costs, "Spot Announcements", December 18, 1961 President's Commission on Campaign Costs, Staff Memorandum: Supplement to the Porter Memorandum of June 23, 1956, "Meaning & Application of the Federal Statutes Regulating Political Campaign Activities," December 19, 1961 President's Commission on Campaign Costs, Staff Memorandum: "Universal Voter Registration Act", December 19, 1961