1. Letter from Lewis J. Brown to Marshall W. Nirenberg Creator: Brown, Lewis J. Date: 10 February 1962 Genre: Letters (correspondence)
2. Letter from Lewis J. Brown to Marshall W. Nirenberg [transcript] Creator: Brown, Lewis J. Date: [9 February 1967] Genre: Letters (correspondence)Transcripts
3. Letter from Lewis J. Brown to Marshall W. Nirenberg Creator: Brown, Lewis J. Date: 9 February 1967 Genre: Letters (correspondence)