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The J. R. R. Tolkien Companion and Guide -LRB- 2006 -RRB- by Wayne G. Hammond and Christina Scull , following their 2005 The Lord of the Rings  : A Reader 's Companion is a two volume work of reference on J. R. R. Tolkien and Tolkien studies .. Wayne G. Hammond. Wayne G. Hammond. Christina Scull. Christina Scull. J. R. R. Tolkien. J. R. R. Tolkien. Tolkien studies. Tolkien studies. Volume 1 `` Chronology '' presents an extraordinarily detailed chronology of Tolkien 's life on 800 pages .. Volume 2 `` Reader 's Guide '' has information on people , places , organisations , biographical topics , literary topics and writings by Tolkien .