Chicago attorney Paul Harris organizes first Rotary meeting on 23 February, leading to formation of the Rotary Club of Chicago.
Rotary Club of Chicago provides a public toilet outside City Hall, Rotary's first community service project.
Paul Harris elected first president of National Association of Rotary Clubs at the first convention.
Clubs formed in Canada, Great Britain, and Ireland; organization name changes to International Association of Rotary Clubs.
Club chartered in Cuba, the first non-English-speaking Rotary country.
President Arch Klumph proposes establishing an endowment fund, precursor of The Rotary Foundation.
Rotary conference in London on education and cultural exchange sets stage for UNESCO.
Forty-nine Rotarians help draft the UN Charter.
Founder Paul Harris dies in Chicago; outpouring of funds from Rotarians used to establish fellowship program.
First 18 Rotary Fellows study abroad, a precursor of Ambassadorial Scholars.
First Interact club formed in Melbourne, Florida, USA. World Community Service program launched.
Special Grants (now Matching Grants) and Group Study Exchange programs begin.
Rotaract program launched.
Health, Hunger and Humanity (3-H) Grants begin.
Foundation grant to immunize six million Philippine children against polio sets stage for PolioPlus.
Rotary launches PolioPlus program and campaigns to raise US$120 million to immunize all the children of the world.
Through the PolioPlus campaign, Rotarians raise US$247 million. First women join Rotary.
Rotary returns to Hungary and Poland.
Western Hemisphere declared polio-free.
Rotary Centers for International Studies in peace and conflict resolution established.
Western Pacific region declared polio-free.
Europe declared polio-free
Rotary launches a second polio eradication fundraising campaign to help fill a critical funding need. Rotarians raise over US$129 million.
Clubs celebrate Rotary's centennial by launching hundreds of community projects and contributing thousands of volunteer hours.
The Rotary Foundation recognizes the millionth Paul Harris Fellow.