About: Helen Rex Keller

Helen Rex Keller (August 13, 1876–January 21, 1967) was an American librarian and author of reference books. Her works included a two volume dictionary of dates. Keller edited and wrote the preface for the , a 30-volume reference work with synopses of works of literature. It was a continuation and expanded version of the Warner Library first published in 1897 with various editions up to 1917 edited by Charles Dudley Warner. She also authored a Dictionary of Dates divided into two volumes for the "old world" and "new world", and also authored the Readers's Digest of Books which provides summaries of about 1,500 books.