And I don t understand Re 12 service it is mentioned on the link you sent me It isn t a matter of the Lex being extended but of being cut back It was the original service to 168 St then traded with the Broadway L when the latter got enough steel cars to run the service So different trains of the Lex ended at Eastern Parkway or Crescent or 111th When the Lex was discontinued 14 trains covered runs to Crescent and 111 in addition to going to Canarsie When the Lex was discontinued it only ran to Eastern Parkway