Question: how is Harry S. Truman and Franklin D. Roosevelt connected?

Context articles: Fourth inauguration of Franklin D. Roosevelt
Timeline of the presidency of Harry S. Truman
Harry S. Truman
Edward E. Cox
Franklin D. Roosevelt
Harry S. Truman Historic District
David Niles
Truman Committee
Truman College
1944 Democratic National Convention

The fourth inauguration of Franklin D. Roosevelt as President of the United States was held on Saturday, January 20, 1945.
 The inauguration marked the commencement of the fourth term of Franklin D. Roosevelt as President and the only term of Harry S. Truman as Vice President.
 This was the first and only time a president has been inaugurated for a fourth term.
 (The Twenty-second Amendment to the United States Constitution, ratified in 1951, limits the number of times a person can be elected President to two.)
 Roosevelt died days into this term, and Truman succeeded to the presidency.
The presidency of Harry S. Truman began on April 12, 1945 when Harry S. Truman became president upon the death of Franklin D. Roosevelt in the last months of World War II, and ended on January 20, 1953.
Harry S. Truman (May 8, 1884December 26, 1972) was the 33rd President of the United States (1945–53), assuming that office upon the death of Franklin D. Roosevelt during the waning months of World War II.
 He is known for launching the Marshall Plan to rebuild the economy of Western Europe, for leading the Cold War against Soviet and Chinese communism by establishing the Truman Doctrine and NATO, and for intervening in the Korean War.
 In domestic affairs, he was a moderate Democrat whose liberal proposals were a continuation of Franklin Roosevelt's New Deal, but the conservative-dominated Congress blocked most of them.
 He used the veto power 180 times, more than any president since then, and saw 12 overridden by Congress; only Grover Cleveland and Franklin D. Roosevelt used the veto so often, and only Gerald Ford and Andrew Johnson saw so many veto overrides.
 He is also the only world leader to have ever used nuclear weapons in war, desegregated the U.S. Armed Forces, supported a newly independent Israel, and was a founder of the United Nations.
Edward Eugene "Eugene" or "Goober" Cox (April 3, 1880 – December 24, 1952) served as a U.S. Representative from Georgia for nearly twenty-eight years.
 A conservative Democrat who supported segregation and opposed President Franklin Delano Roosevelt's "New Deal," Cox became the most senior Democrat on the House Committee on Rules.
 Two special investigative committees that he chaired were heavily criticized as result-oriented persecutions of those Cox did not like.
 A failed attempt to create another such committee would turn out to have far-reaching consequences: in 1941, with American entry into World War II seeming inevitable, Cox proposed an investigative committee, similar to the Civil War-era Joint Committee on the Conduct of the War, to deal with matters of national defense.
 When Roosevelt learned of Cox's intentions, he pre-empted them by agreeing to a similar proposal from Missouri Senator Harry S. Truman; the Truman Committee would come to be seen as a significant asset to the war effort, and its chairman - a little-known "backbencher" at the time of its founding - would become Roosevelt's Vice President and, after his death in 1945, President of the United States.
Franklin Delano Roosevelt ( , his own pronunciation, or ; January 30, 1882 – April 12, 1945), commonly known as FDR, was an American statesman and political leader who served as the 32nd President of the United States from 1933 until his death in 1945.
 A Democrat, he won a record four presidential elections and emerged as a central figure in world events during the mid-20th century.
 He directed the United States government during most of the Great Depression and World War II.
 As a dominant leader of his party, he built the New Deal Coalition, realigning American politics into the Fifth Party System and defining American liberalism throughout the middle third of the 20th century.
 He is often rated by scholars as one of the three greatest U.S. Presidents, along with George Washington and Abraham Lincoln.
The Harry S. Truman Historic District is a National Historic Landmark District encompassing sites closely associated with US President Harry S. Truman in Independence, Missouri.
 It includes the Truman Home at 219 North Delaware, Truman's home for much of his adult life and now a centerpiece of the Harry S. Truman National Historic Site, and the Truman Presidential Library.
 The district was listed on the National Register of Historic Places in 1971, and was designated a National Historic Landmark in 1974.
 When first listed, the district included only the two buildings and a corridor joining them.
 It was substantially enlarged in 2011 to include more sites and the environment in which Truman operated while living in Independence.
David K. Niles (November 23, 1888 – September 28, 1952; Boston, Massachusetts) was a political advisor who worked in the White House from 1942–1951 for the administrations of Franklin Roosevelt and Harry Truman.
 Niles was one of only two Roosevelt aides retained by Truman upon his assumption of the presidency.
 Niles was deeply sympathetic to the Zionist hope of establishing a Jewish state in their homeland in Palestine, and was important in providing access to the White House for American Zionists.
 Niles was said to be capable of bending the president's ear to Zionist arguments.
The Truman Committee, formally known as the Senate Special Committee to Investigate the National Defense Program, was a United States Congressional investigative body headed by Senator Harry S. Truman.
 The bipartisan special committee was formed in March 1941 to find and correct problems in US war production—problems with waste, inefficiency and war profiteering.
 The Truman Committee proved to be one of the most successful investigative efforts ever mounted by the US government: an initial budget of $15,000 was expanded over three years to $360,000 to save an estimated $10–15 billion in military spending, and thousands of lives of US servicemen.
 For comparison, the entire cost of the Manhattan Project was $2 billion, at the time.
 Chairing the committee helped Truman make a name for himself beyond his political machine origins, and was a major factor in the decision to nominate him as vice president, which would propel him to the presidency following the death of Franklin D. Roosevelt.
Harry S Truman College, popularly called Truman College and formerly called Mayfair College, part of City Colleges of Chicago, a college that offers multiple 2-year associate degrees, as well as occupational training in a number of fields.
 Located at 1145 West Wilson Avenue in the Uptown neighborhood, the school was named in honor of U.S. President Harry S. Truman, nominated for the vice presidency in the 1944 Democratic National Convention at the Chicago Stadium.
 Nominated to join the Franklin D. Roosevelt Democratic ticket, Truman was a proponent of public colleges and universities.
 Truman is the largest of the City Colleges of Chicago with a yearly enrollment of over 23,000 students, and has the largest English as a second language and GED program in Illinois.
The 1944 Democratic National Convention was held at the Chicago Stadium in Chicago, Illinois from July 19 to July 21, 1944.
 The convention resulted in the nomination of President Franklin D. Roosevelt for an unprecedented fourth term.
 Senator Harry S. Truman of Missouri was nominated for Vice President.
 Including Roosevelt's nomination for the vice-presidency in 1920, it was the fifth time Roosevelt had been nominated on a national ticket.
 The keynote address was given by Governor Robert S. Kerr of Oklahoma, in which he "gave tribute to Roosevelt's war leadership and new deal policies."