"Coal mines and mining Juvenile fiction." . . "Theodore Roosevelt : Letters from a Young Coal Miner"@en . . . . . "Theodore Roosevelt : letters from a young coal miner" . "Electronic books"@en . . . . . . . . . . . "Fifteen-year-old Frank Kovacs, a Polish immigrant working in the coal mines of eastern Pennsylvania, begins a correspondence with Theodore Roosevelt after he assumes the presidency on September 14, 1901." . "Immigrants Juvenile fiction." . . "Letters Juvenile fiction." . . . . "Polish Americans Juvenile fiction." . .