ON THIS EDITION IT'S PART 3 AS ITS NOW A LOOK AT THE EXTENSIONS AND MODIFICATIONS THAT CONTINUE TO EXPAND IT FURTHER INTO BROOKLYN AND MANHATTAN: https://en.wikipedia.org/wiki/Early_history_of_the_IRT_subway NYC JOKES FROM THE TIMES:https://www.nytimes.com/1997/12/28/nyregion/new-york-jokes-please-don-t-feed-the-supermodels-and-other-letterman-isms.html PHOTO BY: https://picryl.com/media/interborough-rapid-transit-company-third-avenue-elevated-line-borough-of-the-17