Washington, D.C. 1960. 1 typed letter, signed by Senator Hubert H. Humphrey, to Bryan F. LaPlante, the Mitre Corporation, Washington, D.C., dated 28 Nov. 1960. On Humphrey's offficial United States Senate stationery, with the stamp of the Mitre Corp. in a lower corner. Humphrey thanks LaPlante for his "kind words..... More