The Singer Building is a skyscraper located at 120 S. State St. in the Loop community area of Chicago, Illinois.
 The ten-story building was designed by Mundie & Jensen and built from 1925 to 1926.
 The building's Gothic Revival design features terra cotta decorations, piers at the corners, and sets of three double-hung windows on each story separated by two thin piers.
 The Singer Corporation initially used the building as office space; the building has had many owners since the Singer Corporation left the building, and was nearly demolished in the 1970s.
 It is currently owned by FDN Network.
Mount Merritt (10004 ft ) is located in the Lewis Range, Glacier National Park in the U.S. state of Montana.
 The peak is one of six in Glacier National Park that rise over 10000 ft .
 Located in the northeastern part of the park, Mount Merritt rises dramatically a vertical mile above nearby rivers.
 The approach to this remote peak involves a one way hike of 13 mi to the summit base.
 Near the summit, the Old Sun Glacier hangs along the east ridge.
 The summit is named for General Wesley Merritt in 1891 by members of Troop C, 1st Cavalry who were visiting the region while stationed at Fort Assiniboine.
Forest City Municipal Airport (IATA: FXY, ICAO: KFXY, FAA LID: FXY) is a public use airport in Hancock County, Iowa, United States.
 It is located two nautical miles (4 km) south of the central business district of Forest City, a city in Hancock County and Winnebago County.
 The airport is owned by the City of Forest City.
 It serves general aviation for Forest City and the surrounding area.
 Winnebago Industries operates an IAI Astra for company use with the 5800 runway.
 There is no scheduled air service.
Oldway Mansion is a large house and gardens in Paignton, Devon, England.
 It was built as a private residence for Isaac Merritt Singer (1811–1875), and rebuilt by his third son Paris Singer in the style of the Palace of Versailles.
Saginaw Township North is a census-designated place (CDP) in Saginaw County in the U.S. state of Michigan.
 The CDP is defined for statistical purposes and has no legal status as an incorporated municipality.
 The population was 24,994 at the 2000 census.
 The CDP is located within Saginaw Charter Township and consists of most of the township north of State St., while Saginaw Township South is the area south of State St. This division is purely for statistical purposes and does not reflect any present or historical self-identification of the residents in these areas.
Saginaw Township South is a census-designated place (CDP) in Saginaw County in the U.S. state of Michigan.
 The CDP is defined for statistical purposes and has no legal status as an incorporated municipality.
 The population was 13,801 at the 2000 census.
 The CDP is located within Saginaw Charter Township and consists of the township south of State St., while Saginaw Township North is most of the area north of State St. This division is purely for statistical purposes and does not reflect any present or historical self-identification of the residents in these areas.
Isaac Merritt Singer (October 27, 1811 – July 23, 1875) was an American inventor, actor, and businessman.
 He made important improvements in the design of the sewing machine and was the founder of the Singer Sewing Machine Company.
 Many had patented sewing machines before Singer, but his success was based on the practicality of his machine, the ease with which it could be adapted to home use, and its availability on an installment payment basis.
 Singer fathered at least 24 children with various wives and mistresses.
Five Corners is the intersection of New Brunswick Ave, State St, and Smith St in Perth Amboy, New Jersey.
 It is near the eastern end of the downtown area and is marked by the ten-story triangular Five Corners Building (also called the Amboy Towers).
 This building is the tallest building in the city.
The Comfort Starr House, located at 138 State St., Guilford, Connecticut, is a classic saltbox house with an added leanto.
 It is presumed that the original house was built between 1645 and 1646.
 The house derives its name from Comfort Starr who bought the house from the original builder, a Guilford "signer" (settler), Henry Kingsnorth, in 1694.
 Comfort Starr's ancestor was an English physician of the same name who left Kent, United Kingdom and settled in Cambridge, Massachusetts, where he was a founder of Harvard College.
 He is buried in King's Chapel Burying Ground in Boston.
 A branch of the family settled in Connecticut in the 17th century.
Singer Corporation is an American manufacturer of sewing machines, first established as I. M. Singer & Co. in 1851 by Isaac Merritt Singer with New York lawyer Edward Clark.
 Best known for its sewing machines, it was renamed Singer Manufacturing Company in 1865, then The Singer Company in 1963.
 It is based in La Vergne, Tennessee near Nashville.
 Its first large factory for mass production was built in Elizabeth, New Jersey in 1863.

Question: In what city did Isaac Merritt Singer's company use offices in 120 S. State St?
Answer: Chicago, Illinois