Wisconsin
June 10, 1919
Illinois
June 10, 1919
(reaffirmed on June 17, 1919)
Michigan
June 10, 1919
Kansas
June 16, 1919
New York
June 16, 1919
Ohio
June 16, 1919
Pennsylvania
June 24, 1919
Massachusetts
June 25, 1919
Texas
June 28, 1919
Iowa
July 2, 1919
Missouri
July 3, 1919
Arkansas
July 28, 1919
Montana
August 2, 1919
Nebraska
August 2, 1919
Minnesota
September 8, 1919
New Hampshire
September 10, 1919
Utah
October 2, 1919
California
November 1, 1919
Maine
November 5, 1919
North Dakota
December 1, 1919
Maine
December 4, 1919
Colorado
December 15, 1919
Kentucky
January 6, 1920
Rhode Island
January 6, 1920
Oregon
January 13, 1920
Indiana
January 16, 1920
Wyoming
January 27, 1920
Nevada
February 7, 1920
New Jersey
February 9, 1920
Idaho
February 11, 1920
Arizona
February 12, 1920
New Mexico
February 21, 1920
Oklahoma
February 28, 1920
West Virginia
March 10, 1920
(confirmed on September 21, 1920)
Washington
March 22, 1920
Tennessee
August 18, 1920