Referring Clues

• Two in a million?
• Overhead trains, for short
• Commuters' ways
• Two-time U.S. Open winner
• Golfer Ernie
• Noisy trains
• Windy City sights
• 1997 U.S. Open champ
• City rattlers
• Disappearing transports
• 1997 U.S. Open champ Ernie
• Loop runners
• Overhead lines
• Some trains
• Trains on high
• Chicago trains
• 1997 U.S. Open winner
• Rattling trains
• Trains to the Loop
• U.S. Open champ Ernie
• High rollers?
• Loop loopers
• 1997 U.S. Open winner Ernie
• Rare transports, nowadays
• U.S. Open champ in '94 and '97
• Commuting aids
• Bygone Manhattan sights
• Trains that go clickety-clack
• Old N.Y.C. sights
• Overhead trains
• Chicago sights
• Ernie of the P.G.A.
• Urban trains, for short
• Cousins of monorails
• Two-time U.S. Open champ
• N.Y.C. sights beginning in the 1870's
• Bygone New York transports
• Subway relatives
• 2002 British Open champ
• Windy City trains
• Urban transportation
• Loop trains
• Chicago transports
• Clattery transports
• Windy City transports
• Noisy transports
• Loop sights
• Subway alternatives
• Noisy city transports
• 2002 British Open champion
• Cab alternatives
• Loop transports
• Clattery trains
• Raised rumblers
• Some rails
• Golfer called the Big Easy
• Raised railroads
• Athlete nicknamed "The Big Easy"
• See 29-Down
• Golfer called "the Big Easy"
• Raised railways
• Commuting options
• Commuting choices
• Trains in Chicago
• Commuter carriers
• Some urban railways
• Noisy rollers
• Urban transports
• 2002 champion at 62-Across
• Urban carriers
• Ways around Chi-town
• Ernie of golf
• Old N.Y.C. lines
• Mass transit choices
• Choices for Chicago commuters
• Loop circlers
• See 52-Across
• 1994 and 1997 U.S. Open winner
• Raised lines
• Overhead RRs
• Ernie of the 24-Down
• Golfer dubbed "the Big Easy"
• South African who twice won the U.S. Open
• Tennis champ Ernie
• High ways?
• Chicago carriers
• Ernie on the links
• P.G.A. Tour Rookie of the Year after Singh
• See 64-Across
• Lines up?
• Transports near stairs
• Dallas center?
• Local borders?
• Some urban rails
• Ernie of golf fame
• Above-ground trains
• 1999 Nissan Open winner Ernie
• High trains
• C.T.A. trains
• Links legend Ernie
• Trains overhead
• Links luminary Ernie
• Trains over the street
• Ernie of the PGA
• Golf champ Ernie
• Golf pro Ernie
• Raised trains
• Ernie of the links
• Chicago Loop loopers
• 2002 British Open winner
• PGA VIP Ernie
• Some commuter trains
• Aboveground trains
• High lines
• Urban railways
• South African golfer Ernie
• Kays' followers
• Linksman called "the Big Easy"
• Golfer known as "the Big Easy"
• They can run over you harmlessly
• Level edges?
• Woods's rival
• Yellow center?
• Raised transports
• Overhead tracks
• Trains above the road
• "The Big Easy" of the P.G.A.
• Chicago rails
• 2002 British Open champ Ernie
• Clattery overhead trains
• There are three in every lullaby
• 2002 British Open winner Ernie
• They may run over you in Chicago
• Chicago commuter options
• 2002 winner at Muirfield
• Some commuter lines
• World Match Play Championship champ a record seven times
• Chicago runners
• British Open champ the year after Duval
• Golfer nicknamed "The Big Easy"
• Raised railroad rollers
• Two-time runner-up at the Masters
• Lateral sides?
• Woods rival
• Cell wall half?
• 1997 PGA Grand Slam of Golf winner
• Overhead rollers
• Chicago bearers?
• Mickelson rival
• Roll call half
• Runner-up to Singh at the 2000 Masters
• Ernie of the PGA Tour
• See 56-Down
• Singh rival
• They rumble by some apartments
• Winner at Oakmont in 1994
• Hollow center?
• Roll back?
• Goosen rival
• Overhead rumblers
• Name engraved on the Claret Jug in 2002
• Ballet center?
• See 55-Down
• 1994 U.S. Open champ
• Trains above streets
• Legal extremes?
• Lateral extremes?
• Trains over streets
• Overhead transports
• Overhead railroads
• Cars over the road
• High carriers
• Dallas centers?
• Ballad center?
• Golf great from Johannesburg
• Spelling center?
• Trains over the road
• Some Bronx transports
• Level borders?
• Overhead rails
• Some urban lines
• Raised rails
• Pro golfer Ernie
• Letters before ems
• "Toddling Town" trains
• South African golfer
• Letters after kays
• African athlete
• "The Big Easy" of sports
• Chicago railways
• Chicago lines
• 2004 Masters runner-up
• Railways over the street
• Trains in the Loop
• Some railways
• Some rail lines
• Two-time U.S. Open winner Ernie
• Two in a billion?
• Center of Dallas?
• Golfer from Johannesburg
• Railways with a view
• High-riding rails
• Eagle-eyed Ernie?
• Ernie the pro golfer
• Big name in golf
• The six of "Little Nellie Kelly"
• Chi-town trains
• Some monorails
• Overhead railways
• Commuter options
• Ernie of 7-Down
• They loop the Loop
• Some railway systems
• Level ends?
• Certain trains
• They may be over your head
• South African golf pro
• Ernie of birdies
• Ernie on a green
• P.G.A.'s Ernie
• Local pair?
• Chi-town rails
• P.G.A. Tour Rookie of the Year two years before Woods
• New York and Chicago have the oldest ones in the Americas
• Above-the-street trains
• They're caught in Chicago
• Urban rollers
• Ernie of the PGA, to whom this puzzle could be dedicated
• Logical tips?
• Trains on supports
• Golf's Big Easy
• Kay followers
• Chicago commuter carriers
• Some city lines
• They're in the Loop
• Higher form of transportation?
• Mellow middle?
• Higher forms of transportation
• Raised lines?
• Raised RRs
• "Toddling Town" trains
• "The Big Easy" of sports
• Augusta player
• See 26-Down
• 2011 Golf Hall of Fame inductee Ernie
• Transportation options for Blackhawks fans
• Some Chicago trains
• 2011 World Golf Hall of Fame inductee
• Golf's "Big Easy"
• South African links man
• Pillow's center
• Aboveground railroads
• Trains up above
• Right-angle shapes
• Elevated train
• They're run by the CTA
• Trains to Wrigley
• All-time European Tour money winner
• Aerial RRs
• Urban people movers
• Urban people movers
• Masters regular Ernie
• U.S. Open winner in 1997
• Golf's Ernie
• City trains
• Some tracks
• Ernie who'd use 49-Across
• Woods' competitor
• Chicago Loop trains
• Urban trains
• Urban rails
• Lofty trains
• Lofty rails
• There are two in 'all'
• Some rapid transits
• 2002 British Open champion Ernie
• Lines like the London Overground
• Lilly takes three
• Urban rumblers
• Former "Golf Digest" columnist
• Trains you can look up to
• Seven-time winner of the World Match Play Championship
• Some transit lines
• One-third of a dollar?
• Sights on Third Avenue in the mid-20th century
• The Big Easy
• Overhead urban trains
• The "Big Easy"
• 2012 British Open winner Ernie
• Golfer Ernie called "The Big Easy"
• Player who followed in Player's footsteps
• Links ace Ernie
• South African with two U.S. Open wins
• Ernie on a tour
• 2012 British Open champ
• Trains like the one mentioned in "12 Angry Men"
• Some Chi-town transportation
• Ernie in the World Golf Hall of Fame
• Clattering overhead trains
• Subway opposites
• 2002 and 2012 British Open champion
• Railways above streets
• Seven-time Presidents Cup competitor
• They have high stations
• Sights on high tracks
• Johannesburg-born golf champion
• Chicago transit trains
• Tall Ernie of pro golf
• Lullaby trio?
• Carriers of Chicago commuters
• Legal boundaries?
• See 103-Down
• RRs on trestles
• Ernie known as "The Big Easy"
• Two-time U.S. Open champion Ernie
• Golf star Ernie
• Little League starters?
• High rails
• Lines to Wrigley Field
• Some Bronx trains
• High rollers
• CTA trains
• High RRs
• Golfing Ernie
• Loop takers
• PGA star
• Golf Hall of Famer Ernie
• Raised rails in the Windy City
• Trains to Wrigley Field
• Some Bronx lines
• Chi-town transports
• N.Y.C.'s Third and Ninth Avenue lines, e.g.
• South African golfer named
• Legal borders?
• Contemporary of Woods and Mickelson
• Dull pair?
• Causes of street rumbles?
• Suspended transports
• Most IRT lines in the Bronx, e.g.
• Lines around Chicago
• Chi-town circlers
• City railways
• 2012 British Open winner
• Center of excellence?
• ___ de México (Mexico City daily)
• With 99 Down, a golfer
• Noted African sportsman
• End of basketball?
• "Big easy" of golf
• South African golfer with four major championships
• Some municipal trains
• What can take people for a loop?
• Logical extremes?
• 1994 P.G.A. Tour Rookie of the Year
• They overlook the Chicago River
• Chicago rumblers
• Some people movers
• Lloyd's of London beginners
• PGA star from South Africa
• RR systems
• Trains in cities
• Chicago transit
• "The Big Easy" of golf
• 2015 Payne Stewart Award honoree Ernie
• He won the 1994 U.S. Open in a 20-hole playoff
• Old Third Ave. trains in New York City
• Some urban commuter lines
• Old NYC lines
• Lawful ends?
• Golf Hall of Famer since 2011
• High railways
• Former World #1 golfer
• 2012 British Open champion
• A guy on the green
• Half-square shapes
• The "Big Easy" of golf
• Trains that rattle
• Swinging Ernie
• Golfing countryman of Player
• Half-rectangles
• Overhead rails, for short
• C.T.A. transports
• LLL
• Trains to Chicago's Loop
• "The Big Easy" of pro golf
• South African golfing great
• Every lily has two
• Golf Hall of Fame inductee of 2011
• Winner of four 1990s-2000s golf majors
• Dull finish
• Some high rollers in Chi-town
• Central Dallas?
• Ernie of the World Golf Hall of Fame
• High rollers in Chicago
• 2015 World Golf Award winner for Golf Course Designer of the Year
• Half-rectangle shapes
• Certain railways
• Golf great Ernie
• Trains with a view of the street below
• See 17-Across
• "The Complete Short Game" author
• City railroads
• Paso and Alamein
• Subways' kin
• End of all?
• High tracks
• Golfer Ernie ___
• Some urban trains
• Letters with right angles
• Two-time U.S. Open champ, Ernie
• Elevated trains
• Elevated railroads
• Sextet in "Little Nellie Kelly"
• These letters are the 12th
• '97 PGA champ Ernie
• Duval rival
• Noted South African sportsman
• Golfer whose surname is often mispronounced
• Golfer who won the 1991 Southern Africa Tour
• Chicago loop fixture
• They carry some Chicago commuters
• Harlem sights
• Chicago Transit Authority trains
• Golfer whose first name is actually Theodore
• Some CTA trains
• Two-time British Open champion
• Johannesburg-born golfer
• Ernie with two British Open wins
• Raised routes
• Two-time British Open champ
• Commuters' lines
• Upraised railroads
• Putting Ernie
• Ernie on many courses
• PGA Tour's Big Easy
• Chicago trains seen in Helsinki?
• Ernie known for driving
• Subway ancestors
• 2012 Open Championship winner
• U.S. Open winner of 1994 and 1997
• 2012 Open Championship champion
• Chicago commuting options
• See 16
• Ernie with two U.S. Open wins
• High ways?
• Certain railroads
• Subways' cousins
• Bracket shapes
• South African golf great Ernie
• Some city trains
• Trains seen at the end of tunnels?
• Ernie, golf's "Big Easy"
• Manhattan's Third Ave. Line et al.
• 2002 and 2012 British Open winner Ernie
• Ernie with clubs
• Bygone Manhattan trains
• House wings
• High trains in Chicago
• Trains over roads
• Yellow belly?
• Renowned South African golfer
• Golf's "Big Easy" Ernie
• Lolling trio?
• Trains on the western border of El Salvador?
• Building wings
• Ernie of pro golf
• High rollers?
• Some railways, for short
• Ernie putting on a front nine
• City rollers
• Llama's head?
• Ernie with irons
• Rels. of subways
• Wall bracket shapes
• "The Bg Easy" of golf
• Trains above Chicago
• Followers of kays
• Raised 47-Downs
• Local boundaries?
• Pair of allies?
• Hallelujah trio?
• Loopy cursive letters
• Chicago movers
• Mickelson beat him in the 2004 Masters
• Overall conclusion
• Two-time U.S. Open champ of the 1990s
• Couple of million?
• Little League leaders?
• O'Hare-bound trains
• Ernie with two British Open titles
• Trains on viaducts, perhaps
• Llama heads?
• Rails on viaducts
• Well-loved trio
• Volleyball quartet?
• Golfer hidden in "Mickelson"
• Ernie of 24-Down
• Two-time British Open winner
• City railways not at street level
• Golfer Ernie from South Africa
• Outskirts of Liverpool
• Trains like Chicago's
• Parallelogram's trio
• 37-Down's Ernie
• Shapes made by thumbs and index fingers
• Yellow pair?
• Pair of overalls?
• Railways not on street level
• A couple of million?
• Letters typed with the right ring finger
• Raised urban trains
• They're high up in Chi-Town
• Over-the-street transports
• Legal limits?
• Many characters in "Kill Bill"
• A couple of dollars?
• Hollow center?
• South African golf great
• Dull couple?
• Golf champion Ernie
• They can take you to O'Hare
• Chicago conveyances
• Raised city trains
• They loop around the Loop
• Pair of gallons?
• Pair seen three times in "All's Well That Ends Well"
• Two in a million?
• Local borders?
• Literal edges
• Trains that rumble overhead
• Trains at a high level?
• Transports from Midway Airport to the Loop
• Middle of a valley?
• Rapid transit options
• Features of lollipops but not suckers?
• Couple of fellows?
• Golfer Ernie known as "The Big Easy"
• Half the characters in "Kill Bill"?
• Half full?
• Lauryn Hill trio?
• They're raised in Chi-Town
• Trains that run to O'Hare airport
• Above-the-street rumblers
• Trains above street level
• Lapel edges?
• Volleyball doubles?
• Leads of "La La Land"?
• Unlikely duo?
• What always ends well?
• Half of roll call
• Pairs of jolly bells?
• Chicago high rails
• Couple of locals?
• Couple of dollars?
• Center of Dallas?
• Trains for the Chicago White Sox?
• Liverpool's borders?
• Jolly pair?
• Enrollment center?
• Thrilling pair?
• Sports great Ernie known as "The Big Easy"
• Ernie who has won the British Open twice
• Fulfillment center?
• Legal boundaries?
• Unlikely pair?
• "Y"-sounding pair of letters, in Spanish
• Chicago sights, for short