Most stolen bases by a pitcher in a season : to qualify, a player's primary position must have been pitcher

Baseball Digest, Oct, 2005

Most Stolen Bases By A Pitcher in A Season (1898-2004)

To qualify, a player's primary position must have been pitcher

Year    Pitcher, Team                SB   Games by position

1900    Win Mercer, Giants           15   33 (p), 19 (3b),
                                          14 (of), 7 (ss), 3 (2b)
1898    Win Mercer, Washington       14   33 (p), 23 (ss), 19
                                          (of) 5 (3b)
1901    Nixey Callahan, White Sox    10   27 (p), 6 (3b), 2 (2b)
1901    Win Mercer, Senators         10   24 (p), 16 (of), 7
                                          (1b), 1 (3b), 1 (ss)
1899    Nixey Callahan, Cubs          9   35 (p), 9 (of), 2 (ss)
1898    Cy Seymour, Giants            8   45 (p), 35 (of)
1900    Willie Sudoff, Cardinals      8   16 (p), 12 (of), 7
                                          (3b)
1901    Bill Dinneen, Braves          8   37 (p), 3 (of), 2 (1b)
1905    Wild Bill Donovan, Tigers     8   34 (p), 8 (of), 2 (2b)
1902    Wild Bill Donovan, Dodgers    7   35 (p), 8 (1b), 4
                                          (of), 1 (2b)
1943    Rip Sewell, Pirates           7   35 (p)
1900    Bill Dinneen, Braves          6   40 (p)
1901    Harry Howell, Orioles         6   37 (p), 9 (of), 6
                                          (ss), 2 (1b), 1 (2b)
1902    Jack Taylor, Cubs             6   36 (p), 12 (3b), 3
                                          (of), 2 (1b), 1 (2b)
1906    Johnny Lush, Phillies         6   37 (p), 22 (of), 2 (1b)
1906    Wild Bill Donovan, Tigers     6   25 (p), 3 (2b), 1 (of)
1900    Nixey Callahan, Cubs          5   32 (p)
1902    Doc White, Phillies           5   36 (p), 19 (of)
1904    Bill Dinneen, Red Sox         5   37 (p)
1905    Johnny Lush, Phils/Cards      5   28 (p), 11 (of)
1910    Ed Walsh, White Sox           5   45 (p)
1911    Ray Caldwell, Yankees         5   41 (p), 11 (of)
1911    Jack Coombs, A's              5   47 (p)
1913    Russ Ford, Yankees            5   33 (p)
1919    Wilbur Cooper, Pirates        5   35 (p)
1969    Bob Gibson, Cardinals         5   35 (p)