UP  KCS
    (SP)(GWWR)
     (GM&O)
      (CA)
     TK1 TK2                UP
      |   |                (MP)
      |   |\              (C&EI)     NS
      |   | \             /  /      (N&W)
      |   |  \           /  /     (Wabash)
      |   |   \         /  /       /  /
      |   |    \       /  /       /  /
      |   |     \     /  /       /  /|
      |   |      \   /  /       /  / |
      |   |       | /  /       /  /  /
      |   |       |/  /       /  /  /
      |   |       /  /       /  /  /
      |   |      /  /       /  /  /
      |   |     /| /       /  /  /
      |   |    / |/       /  /  /
      |   |   /  /       /| /  /
      |   |  /  /       / |/  /
      |   | /  /|      /  /  /
      |   |/  /  \    /  /  /
      |   |  / T  \  /  /| /
      |  /| /  w   \/  / |/
      | / |/   r   /\ /  /
      |/  /       /  \  /
      /  /       /  / \|
     /  /       /  /   \
    /  /       /  /     \
   /  /       /  /       \
  /  /       /  /       A&S
 /  /       /  /      \
/  /       /  /     (photo, 844)