Question: True Williams was the first to illustrate which title character of a Mark Twain novel?

Context articles: Mark Twain (film)
Mark Twain in Nevada
Mark Twain Lake
True Williams
Shohola Falls
Tom Sawyer
Is He Dead?
Mark Twain Birthplace State Historic Site
Mark Twain Boyhood Home &amp; Museum
A Connecticut Yankee (musical)

Mark Twain is a documentary film on the life of Mark Twain, also known as Samuel Clemens, produced by Ken Burns in 2001 which aired on Public Broadcasting System on January 14 and 15, 2002.
 Burns attempted to capture both the public and private persona of Mark Twain from his birth to his death.
 Some artistic license was taken, resulting in some historical inaccuracies and misrepresentations.
 The film was narrated by Keith David and the voice of Mark Twain was provided by Kevin Conway.
The use of the pen name of Mark Twain first occurred in Samuel Clemens's writing while in the Nevada Territory which he had journeyed to with his brother.
 Clemens/Twain lived in Nevada from 1861-1864, and visited the area twice after leaving.
 Historians such as Peter Messent see Clemens's time in Nevada as "the third major formative period of Mark Twain's career" (after his time in Hannibal and upon the Mississippi), due to his encounters with "writers and humorists who would both shape and put the finishing touches on his literary art."
 The "Routledge Encyclopedia of Mark Twain" states that despite the few "disagreeable experiences" he had there, Twain "thrived in Nevada."
 Among those things he learnt was "how far he could push a joke" a lesson learnt from some "disagreeable experiences" he brought upon himself.
Mark Twain Lake is located in Ralls County, Missouri and Monroe County, Missouri.
 It was created by the Clarence Cannon Dam (formerly called "Joanna Dam") impounding the Salt River and is located about 20 mi southwest of Hannibal.
 The lake was named for Missouri author Mark Twain and part of the area around it is Mark Twain State Park.
 The village of Florida, birthplace of Mark Twain, is mostly surrounded by the lake.
Truman W. "True" Williams (March 22, 1839 – November 23, 1897) was an American artist known as the most prolific illustrator to Mark Twain's books and novels.
 He drew all illustrations to the first edition of "The Adventures of Tom Sawyer" (1876) and was thus the first to illustrate such characters as Tom Sawyer and Huckleberry Finn.
 He was also sole illustrator of Twain's "Sketches, New and Old" and primary illustrator of "Roughing It" and "The Innocents Abroad".
 Working with a number of publishers he also illustrated works by writers Bill Nye, George W. Peck, Joaquin Miller, and others.
 His style in "Tom Sawyer" influenced E. W. Kemble's work in his illustrations to "Adventures of Huckleberry Finn" (1884).
Shohola Falls is a 2003 novel written by Michael Pearson.
 The novel imagines the true story of Thomas Blankenship, the young man that Mark Twain reputedly based the character of Huck Finn upon in his novel Adventures of Huckleberry Finn.
 In "Shohola Falls", Mark Twain is set as an important character, the fictional reality aligned to the historical one.
Thomas "Tom" Sawyer is the title character of the Mark Twain novel "The Adventures of Tom Sawyer" (1876).
 He appears in three other novels by Twain: "Adventures of Huckleberry Finn" (1884), "Tom Sawyer Abroad" (1894), and "Tom Sawyer, Detective" (1896).
Is He Dead?
 is a play by Mark Twain.
 Written by Twain in 1898, it was first published in print in 2003, after Mark Twain scholar Shelley Fisher Fishkin read the manuscript in the archives of the Mark Twain Papers at the University of California at Berkeley.
 The play was long known to scholars but never attracted much attention until Fishkin arranged to have it published in book form.
 She later played a primary role in getting the play produced on Broadway.
 Contemporary American playwright David Ives adapted the play for the modern stage before its inaugural performance in 2007.
 "Is He Dead?"
 is now published and licensed for theatrical use by Playscripts, Inc.
The Mark Twain Birthplace State Historic Site is a publicly owned property in Florida, Missouri, maintained by the Missouri Department of Natural Resources, that preserves the cabin where the author Samuel Langhorne Clemens was born in 1835.
 The cabin is protected within a modern museum building that also includes a public reading room, several of Twain's first editions, a handwritten manuscript of "The Adventures of Tom Sawyer", and furnishings from Twain’s Connecticut home.
 The historic site is adjacent to Mark Twain State Park on a peninsula at the western end of man-made Mark Twain Lake.
 The cabin was listed on the National Register of Historic Places in 1969.
The Mark Twain Boyhood Home, now known as the Mark Twain Boyhood Home & Museum, is located on 206-208 Hill Street, Hannibal, Missouri, on the west bank of the Mississippi River in the United States.
 It was the home of Samuel Langhorne Clemens from 1844 to 1853.
 Clemens, better known as author Mark Twain, found the inspiration for many of his stories, including the white picket fence, while living here.
 It has been open to the public as a museum since 1912, and was designated a National Historic Landmark on December 29, 1962.
 It is located in the Mark Twain Historic District.
A Connecticut Yankee is a musical based on the novel "A Connecticut Yankee in King Arthur's Court" by American writer Mark Twain.
 Like most adaptations of the Twain novel, it focuses on the lighter aspects of the story.
 The music was written by Richard Rodgers, the lyrics by Lorenz Hart, and the book by Herbert Fields.
 It was produced by Lew Fields and Lyle D. Andrews.
 It enjoyed an original run on Broadway in 1927 of 421 performances and a number of revivals.