December of 1960: Oswald claims to have first applied to return to US. February 5, 1961: First acknowledged letter from Oswald requesting return to US and in which Oswald references his December letter that the Warren Commission speculates was never written. February, 1961: Walker's Pro Blue Program is up and running (which it had been since at least 1954) and Overseas Weekly is actively investigating this program March 20, 1961: Additional letter from Oswald forwarded to State Department.