No, I am wrong the 1955 Dodgers were the second team ever to win the Series after losing the two games. That must be what I remembered from a book I read when I was about 11.
Only 11 teams have won a World Series after losing the first two games. (self.baseball)
The comeback teams were:
• The 1921 New York Giants over the New York Yankees, 5-3.
• The 1955 Brooklyn Dodgers over the New York Yankees, 4-3.
• The 1956 New York Yankees over the Brooklyn Dodgers, 4-3.
• The 1958 New York Yankees over the Milwaukee Braves, 4-3.
• The 1965 Los Angeles Dodgers over the Minnesota Twins, 4-3.
• The 1971 Pittsburgh Pirates over the Baltimore Orioles, 4-3.
• The 1978 New York Yankees over the Los Angeles Dodgers, 4-2.
• The 1981 Los Angeles Dodgers over the New York Yankees, 4-2.
• The 1985 Kansas City Royals over the St. Louis Cardinals, 4-3.
• The 1986 New York Mets over the Boston Red Sox, 4-3.
• The 1996 New York Yankees over the Atlanta Braves, 4-2.