1917As America goes to war, Carleton agrees to host for the duration a unit of the Student Army Training Corps, which permits students to finish college while receiving military training.
1917Completion of a new dormitory for women. It will be named Nourse Hall in 1923.
1918-19As WW1 ends, influenza epidemic claimed 20 million lives, 500,000 in the United States. Among its victims is popular Carleton professor of Biblical literature Fred B. Hill.
1919Dancing is permitted on campus for the first time.
1919College enrollment exceeds 500.
1919Ambrose White Vernon establishes at Carleton the nation's first Department of Biography.
1919Founding of the Institute of International Education, which assists in identifying and bringing foreign students to Carleton.
1920Leighton Hall of Chemistry erected.
1922Carleton-in-China program begins; most years until 1949 a junior "rep" is sent to the mission school in Fenchow to teach English for two years.
1922Carleton becomes one of the first colleges to adopt an honors program.
1923Creation of Allen Memorial Hospital, named for a Carleton student killed in WW1.
1923Student automobiles banned on campus.
1923New men's dormitory completed. First called South Hall, it is named Davis Hall in 1926.
1924Nutting Memorial Drive created to commemorate local trailblazing pioneers.
1927Minnie M. Dilley '98 is first woman to serve on the board of trustees.
1927Introduction of the proctor system - precursor to current resident assistants - to West Side (male) dormitory life.
1927Prof. Harvey Stork pushes for development of a Carleton arboretum. Planting directed by Stork and Superintendent of Grounds D. Blake Stewart begins in the spring.
1927Completion of Laird Stadium.
1927Completion of Margaret J. Evans Hall.
1928Dedication of Severance Hall.
1928Creation of the Faculty Club.
1928-1934Carleton basketball teams undefeated in conference play.
1930Carleton Trustee Frank B. Kellogg awarded the 1929 Nobel Peace Prize.
1930Creation of the Carleton Student Association (CSA). F. Atherton Bean '31 is elected its first president. (A precursor student council, the Alma Mater Association, had been founded in 1920.)
1930Bell Field named for Trustee Frederic S. Bell.
1932Dedication of Nourse Little Theater.
1933College purchases Schmidt House for use as a men's dormitory.
1933Alumni Fund Association established.
1935Carleton granted chapter of Sigma Xi.
1935The Voice first appears. (Earlier alumni publications date from 1910, but none since Depression year 1932.)
1936Majority of Carleton students no longer from Minnesota.
1937Pres. Roosevelt's "court packing" scheme aimed at conservative judicial opponents of the New Deal - including Pierce Butler 1887, appointed to the Supreme Court in 1922.
1937Frank B. Kellogg donated $500,000 to support the establishment of a Department of International Relations and to fund scholarships for foreign students to attend Carleton.
1937"Carleton-in-China" school flees south as Japanese armies invade Shansi province.
1939Schmidt House destroyed by fire.
1939Construction of the Women's League Cabin.
1940Creation of the Student Social Cooperative (co-op) to provide "a wider social program for a greater number of students at a lower cost."
1941A women's riding field acquired; named in 1942 for benefactors Samuel S. and Maude Lair Prentiss.