Background: Popol Vuh (also Popol Wuj) is a cultural narrative that recounts the mythology and history of the K'iche' people who inhabit the Guatemalan Highlands northwest of present-day Guatemala City. The Popol Vuh is a creation narrative written by the K'iche' people before the Spanish conquest of Guatemala, originally preserved through oral tradition until approximately 1550 when it was written down. The survival of the Popol Vuh is credited to the 18th century Dominican friar Francisco Ximenez who made a copy of the original text in Spanish The name "Popol Vuh" translates as "Book of the Community", "Book of Counsel", or more literally as "Book of the People". The Popol Vuh includes the Mayan creation myth, beginning with the exploits of the Hero Twins Hunahpu and Xbalanque.
Context: Since its rediscovery by Europeans in the 19th century, the Popol Vuh has attracted the attention of many authors. For example, the myths and legends included in Louis L'Amour's novel The Haunted Mesa are largely based on the Popol Vuh. The planet of Camazotz in Madeleine L'Engle's A Wrinkle in Time is named for the bat-god of the hero-twins story. The text was also used by German film director Werner Herzog as extensive narration for the first chapter of his movie Fata Morgana (released 1972). Mexican painter Diego Rivera did a series of watercolors in 1931, as illustrations for the book.  In 1934, the Franco-American early avant-garde composer Edgard Varese wrote his Ecuatorial - a setting of words from the Popol Vuh for bass soloist and various instruments. The Argentinian composer Alberto Ginastera began writing his opus 44 symphonic work Popol Vuh in 1975, but left the work incomplete at his death in 1983.  In Munich, Germany in 1969, keyboardist Florian Fricke--at the time ensconced in Mayan myth--formed a band named Popol Vuh with synth player Frank Fiedler and percussionist Holger Trulzsch. Their 1970 debut album, Affenstunde, reflected this spiritual connection. The band is notable especially for its extremely early experimentation with forms that became popularized through the modern electronic, new age/ambient music that was to follow years later. They also worked together with Werner Herzog for 5 of his movies. Another band by the same name, this one of Norwegian descent, formed around the same time, its name also inspired by the K'iche' writings.
Question: What did the authors said about him ?

Answer:
the myths and legends included in Louis L'Amour's novel The Haunted Mesa are largely based on the Popol Vuh.