| Mark to undo a deletion | 23 |
| Mark Twain | 10 |
| Mark Twain and George Sand, e.g. | 32 |
| Mark Twain and Saki | 19 |
| Mark Twain and Saki, for two | 28 |
| Mark Twain called it "a good walk spoiled" | 52 |
| Mark Twain character | 20 |
| Mark Twain forte | 16 |
| Mark Twain National Forest setting | 34 |
| Mark Twain novel whose plot is encapsulated in this puzzle | 58 |
| Mark Twain or O. Henry | 22 |
| Mark Twain or Saki, e.g. | 24 |
| Mark Twain portrayer Holbrook | 29 |
| Mark Twain Prize recipient of 2010 | 34 |
| Mark Twain prop | 15 |
| Mark Twain quote concluded | 26 |
| Mark Twain quote continued | 26 |
| Mark Twain specialties | 22 |
| Mark Twain's "The Gilded ___ Tale of Today" | 57 |
| Mark Twain's belief | 23 |
| Mark Twain's boyhood home | 29 |
| Mark Twain's brother | 24 |
| Mark Twain's burial place | 29 |
| Mark Twain's celebrated frog | 32 |
| Mark Twain's Dan'l was one | 34 |
| Mark Twain's elder brother | 30 |
| Mark Twain's Huck | 21 |
| Mark Twain's jumping frog | 29 |
| Mark Twain's kind of training? | 34 |
| Mark Twain's New York burial place | 38 |
| Mark Twain's real first name | 32 |
| Mark Twain, e.g. | 16 |
| Mark Twain, e.g., religiously speaking | 38 |
| Mark Twain, famously | 20 |
| Mark Twain, for one | 19 |
| Mark Twain, for Samuel Clemens | 30 |
| Mark Twain, Lewis Carroll, et al. | 33 |
| Mark Twain, to Samuel Langhorne Clemens | 39 |
| Mark Twain/Bret Harte play | 26 |
| Mark under a consonant | 22 |
| Mark up | 7 |
| Mark up a score | 15 |
| Mark up a score? | 16 |
| Mark up copy | 12 |
| Mark up for revision | 20 |
| Mark up on the screen? | 22 |
| Mark up or down, maybe | 22 |
| Mark up or down, say | 20 |
| Mark up or mark down | 20 |
| Mark up, as a score | 19 |
| Mark up, maybe | 14 |
| Mark up, perhaps | 16 |
| Mark up, say | 12 |
| Mark used in "señor" | 33 |
| Mark used in logic | 18 |
| Mark Wahlberg film: "Max ___" | 39 |
| Mark Wahlberg foe, in a 2001 remake | 35 |
| Mark Wahlberg starred in the 1997 film "___ Nights"... | 64 |
| Mark well | 9 |
| Mark who bought a majority stake in the Dallas Mavericks from Ross Perot's son | 82 |
| Mark who created Tom Sawyer | 27 |
| Mark who played in 15 NHL All-Star Games | 40 |
| Mark who played Spock's father | 34 |
| Mark who said "Go to heaven for the climate, hell for the company" | 76 |
| Mark who was a swimming phenom at the 1972 Olympics | 51 |
| Mark who was the 1998 P.G.A. Player of the Year | 47 |
| Mark who won the 1998 Masters | 29 |
| Mark who won the 1998 Masters and British Open | 46 |
| Mark who won the Masters and British Open in 1998 | 49 |
| Mark who won two major PGA tournaments in 1998 | 46 |
| Mark whose name means "little hook" in Czech | 54 |
| Mark Wills "Humming like a big well-___ machine" | 58 |
| Mark with a branding iron | 25 |
| Mark with a cut | 15 |
| Mark with a hot iron | 20 |
| Mark with a mustache | 20 |
| Mark with a new price | 21 |
| Mark with a stain of color | 26 |
| Mark with acid | 14 |
| Mark with an iron | 17 |
| Mark with an X, perhaps | 23 |
| Mark with bands | 15 |
| Mark with blotches | 18 |
| Mark with dots | 14 |
| Mark with graduations | 21 |
| Mark with grooves | 17 |
| Mark with heat | 14 |
| Mark with intersecting sets of parallel lines | 45 |
| Mark with minute grooves | 24 |
| Mark with multicolored spots | 28 |
| Mark with notches | 17 |
| Mark with spots | 15 |
| Mark with stripes | 17 |
| Mark with subscript dots | 24 |
| Mark Yom Kippur | 15 |
| Mark your card! | 15 |
| Mark ___-Baker (actor who played Larry Appleton on "Perfect Strangers") | 81 |
| Mark _____, Oliver of 1968 film | 31 |
| Mark's competitor | 21 |
| Mark's counterpart | 22 |