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His books included biographies of Eleanor Roosevelt ( Mrs. R ) , Presidents Harry Truman ( The Man From Missouri ) and Lyndon Johnson ( Sam Johnson 's Boy ) , Senator Tom Connally , House Speaker Sam Rayburn ( Sam Rayburn ) , the first ten Presidents of the United States ( The First Ten ) , and the political bosses who ruled the American political machine s that dominated in the 1920s and 1930s ( The Bosses ) .
 Eleanor Roosevelt, Harry Truman, Lyndon Johnson, Sam Johnson, Tom Connally, Sam Rayburn, Sam Rayburn
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Eleanor Roosevelt, Harry Truman, Lyndon Johnson, Sam Johnson, Tom Connally, Sam Rayburn, Sam Rayburn