FDR’s Path to the White House (1882-1933) | American Experience PBS As the longest-serving president in U.S. history and leader through two of the nation's worst crises — the Great Depression and World War II — Franklin Delano Roosevelt set the standard for the modern presidency. Our two-part biography traces America's 32nd president from his early years, as the pampered scion of a wealthy family, to his devastating paralysis from polio to his 12 years in the White House. PART ONE (1882-1932) traces Roosevelt's family background and education and follows his early political career and his courtship of his distant cousin Eleanor Roosevelt and their troubled marriage. The story continues with Roosevelt's bout with polio at age 39 and his struggle to rehabilitate his body and his political career.