One of the Ramones
One of the rare earths
One of the Rat Pack
One of the ratites
One of the ratites.
One of the Reagans
One of the record industry's former Big Four
One of the red Monopoly spaces
One of the Redgrave sisters
One of the Redgraves
One of the reeds
One of the reindeer
One of the Reiners
One of the renters in Steinbeck's "Tortilla Flat"
One of the Rhine Maidens
One of the Rice Krispies elves
One of the Rice Krispies mascots
One of the Rice Krispies sounds
One of the Ringling Brothers
One of the rivers near Three Rivers Stadium
One of the rivers of Three Rivers Stadium
One of the Rockefellers
One of the Rolling Stones
One of the Romneys
One of the rooms in Clue
One of the Roosevelts
One of the Round Table knights
One of the Royal Family
One of the Rubbles
One of the Rugrats
One of the Rushmore quartet
One of the Ryder Cup teams
One of the S's in SST
One of the S's in U.S.S.
One of the Saarinens
One of the Saarinens of Finland
One of the sacraments
One of the sales force
One of the sales staff
One of the same bloodline
One of the sandbox set
One of the Sandwich Islands
One of the saner kids on "South Park"
One of the schools named in the Public Schools Act of 1868
One of the Schuyler sisters in "Hamilton"
One of the Scooby-Doo gang
one of the Scots
One of the Scraggs in "Li'l Abner"
One of the seals
one of the season
One of the Sedins
one of the segments first formed by the division of the ovum
one of the self-governing nations in the British Commonwealth
one of the sense
one of the senses
One of the services: Abbr.
one of the set of speech sounds in a language
One of the seven
One of the seven "deadly" things
One of the seven Catholic canonical hours
One of the seven continents
One of the seven conts.
One of the seven deadlies
One of the seven deadly sins
one of the seven dwarfs
One of the seven principles of Kwanzaa
One of the Seven Sages of Greece
One of the Seven Sisters
One of the Seven Sisters colleges
One of the Seven Sisters schools
One of the Seven Wise Men of ancient Greece
One of the seven wonders
One of the Seven Wonders of the World
One of the Seven Wonders of the World built on an island of Alexandria
One of the sexes
One of the shifts
One of the Shmenge brothers
One of the Shrivers
One of the SI base units
One of the Siamese twins
One of the simple machines
One of the Sinatras
One of the singers of "Can You Feel the Love Tonight"
One of the singing Braxton sisters
One of the singing chipmunks
One of the singing Gibbs
One of the singing Jacksons
One of the sisters in "Frozen"
One of the sisters in "Sisters"
One of the sisters in Chekhov's "Three Sisters"
One of the sisters on "Braxton Family Values"
One of the sisters on TV's "Braxton Family Values"
One of the six inert gasses
One of the six noble gasses
One of the six official languages of the United Nations
One of the six simple machines
One of the six states of Australia
One of the Skywalkers
one of the small asteroid like bodies that formed the building blocks of the planet
One of the small fry
one of the small particles or organic molecules of protoplasm
One of the smart set
One of the Smothers Brothers
One of the Smurfs
One of the Snow White Seven?
One of the so-called "Four Asian Tigers"
One of the so-called "Public Ivies"
One of the so-called "Three Crowns of Florence," along with Petrarch and Boccaccio
One of the so-called Southern Ivies
One of the social elite
One of the social sciences, for short
One of the Society Islands
One of the sons on "My Three Sons"
One of the Sopranos
One of the sounds of time
One of the Sox, e.g.
One of the Spanish
One of the Spellings
One of the Spice Girls
One of the Spice Girls and namesakes
one of the spores (usually eight in number) that are produced in an ascus
One of the spots on dice
One of the Squeeze-a-Song toy characters
One of the SRO crowd
One of the Staal brothers
one of the stalls of the lower range where there are two ranges
One of the Staple Singers
One of the stars of 'M*A*S*H'?
One of the states of matter
One of the states seen from Lookout Mtn.
One of the states touched by 15-Across
one of the steeplejacks
one of the steps in a staircase
One of the Stockholm Convention's "dirty dozen" (2001)
One of the Stooges
One of the stratford sisters on "10 things i hate about you"
One of the strike zone limits
One of the strings
One of the subjects of "The Late Shift"
One of the subjects of the best-selling '02 book "The Conquerors"
One of the subjects of the book "War of the Currents"
One of the subtractive primaries
One of the Sunda Islands
One of the Super Bowl-winning Mannings
One of the superheroes in 2012's "The Avengers"
One of the superstates in "1984"
One of the Supremes
one of the suspects in the board game clue who was played by eileen brenn
One of the swarm
One of the tallest birds
One of the teams that made the Pac-10 the Pac-12
One of the Teenage Mutant Ninja Turtles
One of the Ten Commandments, more likely than not
One of the Ten Plagues
one of the tendons at the back of the knee
One of the tennis-playing Williamses
One of the tenses
one of the the advantages of being
One of the things little boys are made of, and a hint to 20-, 31- and 41-Across
One of the things the slithy toves did in the wabe
One of the Thomases
One of the Three B's of classical music
One of the Three B's of music
One of The Three Bears
One of the three dimensions
One of the three Fates
One of the three Fates in Greek mythology
One of the Three Fires of Buddhism
One of the three green R's
One of the three H's in a summer weather forecast
one of the three major deities in the later Hindu pantheon
one of the three major divinities in the later Hindu pantheon
One of the three musical B's
One of the Three Musketeers
One of the three NAFTA signatories
one of the three prairie provinces in central Canada
One of the three R's
One of the three R's of environmentalism
One of the Three Rivers
One of the three rivers of three rivers stadium
one of the three sections of the hipbone that forms part of the pelvis
One of the three states of matter
One of the Three Stooges
One of the Three Tenors
One of the Three Wise Men
One of the thrushes
One of the Tide's rivals
One of the tides
One of the Titanesses
One of the Titans
One of the Titans Father of the
one of the toothed wheels in the gears of a motor vehicle
One of the top four automakers, circa 1907
One of the top-10 in GDP
One of the townspeople (Abbr.)
One of the Trask brothers
One of the tribes of Israel
One of the Trinity
One of the troupe
One of the Trump boys
One of the Trumps
One of the Ts in TNT
One of the Tudors
One of the Turners
One of the TV Huxtables
One of the Tweedles
One of the Twelve Apostles
one of the twelve divisions of the calendar year
One of the Twelve Olympians
one of the twelve parts of a food
one of the twelve parts of a foot
One of the twelve tribes of Israel
One of the twelve?
One of the Twin Cities
One of the Twin Cities (6)
One of the two Andrews in a university name
One of the two animated stars in the pilot "Big House Blues"
One of the two capitals of Bolivia
One of the two characters in Dr. Seuss' "Fox in Socks"
One of the two flavors in Sprite
One of the two genders
one of the two integuments surrounding the ovule of a plant
One of the two leading actors in play or film
One of the two main branches of Islam
One of the two most recent Pac-12 members
one of the two posts marking the limit of a goal
One of the two schools of Buddhism
One of the two sexes
One of the two themes
One of the two thems
One of the U.N.'s official languages
One of the U.S. Virgin Islands
One of the U.S.'s 435
One of the undead
One of the United Arab Emirates
One of The United States' six
One of the units in a hospital
One of the Untouchables
One of the Ursas
One of the utils.
One of the Van Halens
One of the Vanderbilts
One of the Vatican's 109
One of the vertices of the Summer Triangle
One of the very first sons
One of the village people?
One of the vipers
One of the Virgin Islands
one of the visayan islands
One of the vital signs