The Purdue University College of Liberal Arts is one of eight colleges (major academic divisions) of Purdue University.
 In addition to liberal arts programs, the College of Liberal Arts also contains the social sciences and humanities programs at Purdue.
The Purdue University College of Science is one of eight major academic divisions, or "Colleges", of Purdue University.
 The science courses offered by the College of Science account for about one-fourth of Purdue's one million student credit hours.
Sproul Observatory was an astronomical observatory owned and operated by Swarthmore College.
 It is located in Swarthmore, Pennsylvania, United States, and is named after William Cameron Sproul, the 27th Governor of Pennsylvania, who graduated from Swarthmore in 1891.
Swarthmore (pronounced locally, or ) is a borough in Delaware County, Pennsylvania, United States.
 Swarthmore was originally named "Westdale" in honor of noted painter Benjamin West, who was one of the early residents of the town.
 The name was changed to "Swarthmore" after the establishment of Swarthmore College.
 "Swarthmore" can be pronounced with the first "r" either vocalized or dropped due to differences in rhotic and non-rhotic accents, but locally it is usually pronounced without the first "r" (i.e. "SWAHTH-mor").
 The borough population was 6,194 as of the 2010 census.
The Purdue University College of Engineering is one of eight major academic divisions, or "colleges", of Purdue University.
 Established in 1874 with programs in Civil and Mechanical Engineering, the college now offers B.S., M.S., and Ph.D. degrees in more than a dozen disciplines.
 Purdue's engineering program has also educated 22 of America's astronauts, including Neil Armstrong and Eugene Cernan who were the first and last astronauts to have walked on the moon, respectively.
 Many of Purdue's engineering disciplines are recognized as top-ten programs in the U.S.
 The college as a whole is currently ranked 9th in the U.S. of all doctorate-granting engineering schools by "U.S. News & World Report".
Indiana University – Purdue University Fort Wayne (IPFW) is a coeducational public university in Fort Wayne, Indiana, United States.
 Founded in 1964, IPFW is a cooperatively-managed regional campus of two state university systems: Indiana University and Purdue University.
 IPFW enrolls 13,459 undergraduate and postgraduate students in nine colleges and schools, including a branch of the Indiana University School of Medicine.
 IPFW offers more than 200 graduate and undergraduate degree programs through IU or Purdue universities.
 The university's 14 men's and women's athletic teams compete in Division I of the NCAA Summit League and, since the 2016–17 school year, are known as the Fort Wayne Mastodons.
Purdue University is a public university system in the U.S. state of Indiana.
 A land-grant university, its main campus is in West Lafayette.
 With nearly 75,000 students, it is one of the largest university systems in the United States and includes four campuses, a statewide technology program, extension centers and continuing education programs.
 The main campus of Purdue University is noted for its engineering, agriculture, and business administration programs, which consistently rank among the best in the country and the world.
Swarthmore College ( locally, or ) is a private liberal arts college located in Swarthmore, Pennsylvania, 11 miles southwest of Philadelphia.
 Founded in 1864, Swarthmore was one of the earliest coeducational colleges in the United States.
 It was established to be a college "...under the care of Friends, at which an education may be obtained equal to that of the best institutions of learning in our country."
 By 1906, Swarthmore dropped its religious affiliation, becoming officially non-sectarian.
Purdue University Airport (IATA: LAF, ICAO: KLAF, FAA LID: LAF) is a public-use airport in Tippecanoe County, Indiana, United States.
 Owned by Purdue University, the airport is 2 NM southwest of the central business district of Lafayette, in West Lafayette.
 Because of the heavy traffic generated by Purdue University and its flight programs, Purdue University Airport is one of the busiest airports in Indiana, second only to Indianapolis International Airport.
Purdue University is a public research university located in West Lafayette, Indiana and is the main campus of the Purdue University system.
 The university was founded in 1869 after Lafayette businessman John Purdue donated land and money to establish a college of science, technology, and agriculture in his name.
 The first classes were held on September 16, 1874, with six instructors and 39 students.

Question: Of Swarthmore College and Purdue University system, which is one of the earliest coeducational colleges in the United States?l
Answer: Swarthmore was one of the earliest coeducational colleges in the United States.