Question: The author of "Morgoth's Ring" drew the original maps for which of his father's books?

<P0-S0> Morgoth's Ring (1993) is the tenth volume of Christopher Tolkien's 12-volume series "The History of Middle-earth" in which he analyses the unpublished manuscripts of his father J. R. R. Tolkien. <SEP> <P1-S0> Nancy Drew is a fictional American character in a mystery fiction series created by publisher Edward Stratemeyer as the female counterpart to his Hardy Boys series. <P1-S1>  The character first appeared in 1930. <P1-S2>  The books are ghostwritten by a number of authors and published under the collective pseudonym Carolyn Keene. <P1-S3>  Over the decades, the character evolved in response to changes in US culture and tastes. <P1-S4>  The books were extensively revised and shortened, beginning in 1959, in part to lower printing costs with arguable success. <P1-S5>  In the revision process, the heroine's original character was changed to be less assertive and more feminine. <P1-S6>  In the 1980s, an older and more professional Nancy emerged in a new series, "The Nancy Drew Files", that included romantic subplots for the sleuth. <P1-S7>  The original "Nancy Drew Mystery Stories" series started in 1930, and ended in 2004. <P1-S8>  Launched that same year, the "Girl Detective" series features Nancy driving a hybrid electric vehicle and using a cell phone. <P1-S9>  In 2013, the "Girl Detective" series ended, and a new current series called "Nancy Drew Diaries" was launched. <P1-S10>  Illustrations of the character evolved over time to reflect contemporary styles. <P1-S11>  The character proves continuously popular worldwide: at least 80 million copies of the books have been sold, and the books have been translated into over 45 languages. <P1-S12>  Nancy Drew is featured in five films, two television shows, and a number of popular computer games; she also appears in a variety of merchandise sold around the world. <SEP> <P2-S0> Christopher John Reuel Tolkien (born 21 November 1924) is the third son of the author J. R. R. Tolkien (1892–1973), and the editor of much of his father's posthumously published work. <P2-S1>  He drew the original maps for his father's "The Lord of the Rings", which he signed C. J. R. T. <SEP> <P3-S0> Abraham Bradley, Jr. (February 22, 1767 – May 7, 1838) was an American lawyer, judge, and cartographer who was assistant postmaster general for 30 years during the earliest history of the United States Post Office Department. <P3-S1>  Bradley was responsible for moving the federal government's post office from Philadelphia, Pennsylvania, to the new capital at Washington, D.C., hosting the national post office in his own home for a period. <P3-S2>  The continuity brought by Bradley's long employment during the tenure of five different United States postmasters general helped establish the budding postal service as a reliable provider; Bradley drew detailed and innovative postal route maps which contributed significantly to the office's efficiency. <P3-S3>  Bradley's original work of 1796 was one of the first comprehensive maps of the United States as it existed, which "represented the first clear cartographic break in European-dominated map making and introduced a new, more distinctly American style of cartography to the United States."