1. Letter from Douglas Hofstadter to Paul Berg and Maxine Singer Creator: Indiana University. Center for Research on Concepts and CognitionHofstadter, Douglas Date: 24 September 1990 Genre: Letters (correspondence)Reviews (document genre)
2. Minireview: Unusual Reverse Transcriptases Creator: Singer, Maxine Date: 20 October 1995 Publisher: American Society for Biochemistry and Molecular Biology Genre: ArticlesReviews (document genre)
3. LINE-1: A Mammalian Transposable Element Creator: Singer, MaxineFanning, T. G. Date: 1987 Publisher: Elsevier Science Publishers Genre: ArticlesReviews (document genre)
4. Letter from Gabriel A. Dover, T. Strachan, E. S. Coen, and S. D. M. Brown to Science Magazine Creator: University of CambridgeBrown, S. D. M.Dover, Gabriel A.Strachan, T.Coen, E. S. Date: 5 November 1982 Genre: Letters (correspondence)Reviews (document genre)