1. Letter from Kathleen J. Danna to Daniel Nathans Creator: Danna, Kathleen J.Laboratorium voor Moleculaire Biologie Date: 20 January 1973 Genre: Letters (correspondence)
2. Letter from Kathleen J. Danna to Daniel Nathans Creator: Danna, Kathleen J.Laboratorium voor Moleculaire Biologie Date: 31 October 1972 Genre: Letters (correspondence)