The Political Graveyard: A Database of American History
Politicians who Died in Mayo Clinic hospitals
(Rochester, Minn.)

Very incomplete list!

in chronological order

  James Delmage Ross (1872-1939) — also known as J. D. Ross — of Seattle, King County, Wash. Born in Chatham, Ontario, November 9, 1872. Electrical engineer; Seattle superintendent of lighting (electric power), 1911-39; member, U.S. Securities and Exchange Commission, 1935-37; administrator, Bonneville Power Administration, 1937. Died, from a heart attack, following surgery for stomach and intestinal ailments, in the Mayo Clinic, Rochester, Olmsted County, Minn., March 14, 1939 (age 66 years, 125 days). Interment at Ross Family Burial Site, Newhalem, Wash.
  Relatives: Married 1907 to Alice M. Wilson.
  Mount Ross, in Whatcom County, Washington, is named for him.  — Ross Dam (built 1937-49), on the Skagit River, in Whatcom County, Washington, is named for him.  — Ross Lake, a reservoir in Whatcom County, Washington, which also extends into British Columbia, Canada, is named for him.  — The World War II Liberty ship SS J. D. Ross (built 1943 at Portland, Oregon; sold and renamed SS Lampsis; sank during a storm in the North Atlantic Ocean, 1966) was originally named for him.
  Epitaph: "J.D. Ross, one of the greatest Americans of our generation, was an outstanding mathematician and equally great engineer. He had also the practical ability to make things work in the spirit of public opinion and successful business. More than that, he was a philosopher and lover and student of trees and flowers. His successful career and especially his long service in behalf of the public interest are worthy of study by every American boy."
  See also Wikipedia article — Find-A-Grave memorial
E. W. Rowell Ellsworth Wagner Rowell (1886-1953) — also known as E. W. Rowell; "Bert" — of Casper, Natrona County, Wyo.; Anchorage, Alaska. Born in California, March 29, 1886. Republican. Locomotive engineer; printing business; mayor of Casper, Wyo., 1930-33; defeated, 1927, 1933, 1935, 1937; candidate for Governor of Wyoming, 1932. Member, Freemasons; Knights Templar; Shriners; Odd Fellows; Moose; Elks; Lions. Died, following surgery for a brain tumor, in the Mayo Clinic, Rochester, Olmsted County, Minn., May 27, 1953 (age 67 years, 59 days). Cremated.
  Relatives: Married, November 2, 1906, to Daphne Cohen; married 1933 to Izetta mae Daugaard.
  Image source: Casper (Wyoming) Tribune-Herald, November 4, 1931
  Albert Sidney Johnson Carnahan (1897-1968) — also known as A. S. J. Carnahan — of Ellsinore, Carter County, Mo. Born near Ellsinore, Carter County, Mo., January 9, 1897. Democrat. Served in the U.S. Navy during World War I; school teacher and principal; U.S. Representative from Missouri 8th District, 1945-47, 1949-61; defeated, 1942, 1946; U.S. Ambassador to Sierra Leone, 1961-63. Baptist. Member, Freemasons. Died, in the Mayo Clinic hospital, Rochester, Olmsted County, Minn., March 24, 1968 (age 71 years, 75 days). Interment at Carson Hill Cemetery, Near Ellsinore, Carter County, Mo.
  Relatives: Married 1925 to Kathel Schupp; father of Melvin Eugene Carnahan (who married Jean Anne Carpenter); grandfather of John Russell Carnahan (born1958) and Robin Carnahan.
  Political family: Carnahan family of St. Louis, Missouri.
  See also congressional biography — Govtrack.us page — U.S. State Dept career summary
"Enjoy the hospitable entertainment of a political graveyard."
Henry L. Clinton, Apollo Hall, New York City, February 3, 1872
The Political Graveyard

The Political Graveyard is a web site about U.S. political history and cemeteries. Founded in 1996, it is the Internet's most comprehensive free source for American political biography, listing 315,917 politicians, living and dead.
  The coverage of this site includes (1) the President, Vice President, members of Congress, elected state and territorial officeholders in all fifty states, the District of Columbia, and U.S. territories; and the chief elected official, typically the mayor, of qualifying municipalities; (2) candidates at election, including primaries, for any of the above; (3) all federal judges and all state appellate judges; (4) certain federal officials, including the federal cabinet, diplomatic chiefs of mission, consuls, U.S. district attorneys, collectors of customs and internal revenue, members of major federal commissions; and political appointee (pre-1971) postmasters of qualifying communities; (5) state and national political party officials, including delegates, alternate delegates, and other participants in national party nominating conventions. Note: municipalities or communities "qualify", for TPG purposes, if they have at least half a million person-years of history, inclusive of predecessor, successor, and merged entities.  
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