{{Infobox thoroughbred racehorse , horsename = Slide Rule , image = , caption = , sire = Snark , grandsire = Boojum , dam = King's Idyll , damsire =

Sir Gallahad III Sir Gallahad (1920–1949) was a French Thoroughbred racehorse and an extremely important sire in the United States. Racing career Racing at age two in France for his British breeder/owner, Jefferson Davis Cohn, Sir Gallahad earned victory in ...

, sex =

Stallion A stallion is a male horse that has not been gelded (castrated). Stallions follow the conformation and phenotype of their breed, but within that standard, the presence of hormones such as testosterone may give stallions a thicker, "cresty" nec ...

, foaled = 1940 , country =

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

, colour = Dark Chestnut , breeder =

Arthur B. Hancock Arthur Boyd Hancock (June 26, 1875 - April 1, 1957) was a breeder of thoroughbred racehorses who established Claiborne Farm in Paris, Kentucky, United States. Born at Ellerslie Estate in Albemarle County, Virginia, near Charlottesville, Arth ...

, owner =

William E. Boeing William Edward Boeing (; October 1, 1881 – September 28, 1956) was an American aviation pioneer who founded the Pacific Airplane Company in 1916, which a year later was renamed to The Boeing Company, now the largest exporter in the United St ...

, trainer = Cecil Wilhelm , record = 29: 10-6-2 , earnings =

US$ The United States dollar (symbol: $; code: USD; also abbreviated US$ or U.S. Dollar, to distinguish it from other dollar-denominated currencies; referred to as the dollar, U.S. dollar, American dollar, or colloquially buck) is the official ...

133,760 , race = Babylon Handicap (1942)
Cowdin Stakes (1942)
Arlington Classic (1943)

Interborough Handicap The Interborough Stakes, previously ''Interborough Handicap'' is an American Thoroughbred horse race held annually at the beginning of January at Aqueduct Racetrack in Ozone Park, Queens, New York. A non-graded stakes race open to fillies & mares ...

(1943)
Jerome Handicap (1943)
Peter Pan Handicap (1943)

Swift Stakes Swift or SWIFT most commonly refers to: * SWIFT, an international organization facilitating transactions between banks ** SWIFT code * Swift (programming language) * Swift (bird), a family of birds It may also refer to: Organizations * SWIFT, a ...

(1943)

Westchester Handicap The Westchester Stakes is a Grade III American Thoroughbred horse race for three-years-old and older run over a distance of miles annually in early May at Belmont Park, in Elmont New York. The event currently offers a purse of $100,000 added. ...

(1943)
Experimental Free Handicap (1943) , awards = , honours = Slide Rule (1940 – ? ) was a

Thoroughbred race horse The Thoroughbred is a horse breed best known for its use in horse racing. Although the word ''thoroughbred'' is sometimes used to refer to any breed of purebred horse, it technically refers only to the Thoroughbred breed. Thoroughbreds are con ...

who was owned by

Boeing The Boeing Company () is an American multinational corporation that designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, telecommunications equipment, and missiles worldwide. The company also provides leasing and product ...

. He sired by

Metropolitan Metropolitan may refer to: * Metropolitan area, a region consisting of a densely populated urban core and its less-populated surrounding territories * Metropolitan borough, a form of local government district in England * Metropolitan county, a typ ...

and

Suburban Handicap The Suburban Stakes is an American Grade II Thoroughbred horse race run annually at Belmont Park in Elmont, New York. Open to horses age three and older, it is now run at the mile distance on dirt for a $700,000 purse. Named after the City and Su ...

winner,

Snark Snark may refer to: Fictional creatures * Snark (Lewis Carroll), a fictional animal species in Lewis Carroll's ''The Hunting of the Snark'' (1876) * Zn'rx, a race of fictional aliens in Marvel Comics publications, commonly referred to as "Snark ...

and was out of the mare King's Idyll, a daughter of the outstanding Champion sire and broodmare sire,

. He was a stablemate of the more noted Devil's Thumb, and in April 1943, of the colt ''Twoses''. Newspaper reports of the early 1940s described him as a ''little chestnut colt.''''Slide Rule Defeats Bourmont By Length In $72,000 Classic'',

New York Times ''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid d ...

, July 25, 1943, pg. S1.

Competition chronicle

Slide Rule's first victory of significance came in the Babylon Handicap at

Aqueduct Race Track Aqueduct Racetrack is a Thoroughbred horse racing facility and casino in the South Ozone Park and Jamaica neighborhoods of Queens, New York City, United States. Aqueduct is the only racetrack located within New York City limits. Its racing ...

on September 5, 1942. The colt emerged from the middle of the pack to take the $7,325 purse.''Rurales Set Back'', New York Times, September 6, 1942, pg. S1. He won a

Kentucky Derby The Kentucky Derby is a horse race held annually in Louisville, Kentucky, United States, almost always on the first Saturday in May, capping the two-week-long Kentucky Derby Festival. The competition is a Grade I stakes race for three-year ...

trial, the Experimental Handicap, at Jamaica, New York, on April 8, 1943. The field of fifteen included thirteen Derby eligibles. On June 4, 1942 Slide Rule was part of an owner ''-'' trainer ''-'' jockey double for W.E. Boeing, Cecil Wilhelm, and Ralph Neves at

Belmont Park Belmont Park is a major thoroughbred horse racing facility in the northeastern United States, located in Elmont, New York, just east of the New York City limits. It was opened on May 4, 1905. It is operated by the non-profit New York Racin ...

. ''Larrup'', the other Boeing entry, won the first event with Slide Rule completing the double. Slide Rule, along with ''Corona, Corona'', another Boeing thoroughbred, entered the $62,000

Arlington Futurity The Arlington-Washington Futurity is a Listed horse race for Thoroughbred two-year-olds. It is scheduled to run at a distance of one mile on the turf at Arlington Park, Arlington Heights, Illinois every fall and as at 2020 offers a purse of $100, ...

Chicago, Illinois (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name ...

, on July 18, 1942. The event was won by ''Occupation'', with ''Corona, Corona'' finishing fifth and Slide Rule 7th. In the Wood Memorial Stakes at

on April 17, 1943, Slide Rule was injured, slowed to a walking gait, and finished fifth. Cecil Wilhelm, Slide Rule's trainer, shipped the thoroughbred to

Churchill Downs Churchill Downs is a horse racing complex located on Central Avenue in south Louisville, Kentucky, United States, famed for hosting the annual Kentucky Derby. It officially opened in 1875 and was named for Samuel Churchill, whose family was ...

on April 22, 1943. Ocean Wave finished nine lengths ahead of Slide Rule, who placed second, in the Kentucky Derby Trial on April 27, 1943.

Winner's circle in New York

After finishing third to Kentucky Derby winner, Count Fleet, Wilhelm decided to hold the colt out of the

Preakness Stakes The Preakness Stakes is an American thoroughbred horse race held on Armed Forces Day which is also the third Saturday in May each year at Pimlico Race Course in Baltimore, Maryland. It is a Grade I race run over a distance of 9.5 furlongs () on ...

. Slide Rule ran the mile at 1:41 1/5 at

. However, the trainer opted to run him instead in the

Withers Stakes The Withers Stakes is a Graded stakes race, Grade III American Thoroughbred horse race for three years old horses over the distance of miles on the dirt scheduled annually in February at Aqueduct Racetrack in Queens, New York (state), New York. T ...

at Aqueduct Race Track. As a 2 to 5 favorite in the $9,650 Peter Pan Handicap, Slide Rule won by "an inch" over ''Vincentive'' with a last second lunge. The victory secured the $7,025 winner's share for W.E. Boeing. Conn McCreary was the winning jockey on Slide Rule. The winning time was 1:51 1/5.

Chicago success

A camera decision was necessary to decide that Occupation had defeated Slide Rule by a head at Washington Park Race Track on June 25, 1943. In his second start of the 1943 season, Occupation won the seven furlong event and its purse of $2,500. In the $72,000 Arlington Classic at Arlington Park, Slide Rule captured a $53,400 victory as a 5 to 1 shot. He came in a length ahead of ''Bourmont'', despite having lost in three previous races at the

Chicago, Illinois (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name ...

race track. It was the colt's most important victory, coming after a runnerup to Count Fleet in the Withers Stakes and two stakes wins at Belmont Park.''Slide Rule Defeats Bourmont By Length in $72,000 Classic'', July 25, 1943, pg. S1.

References

1940 racehorse births Thoroughbred family 1-c Racehorses bred in Kentucky Racehorses trained in the United States