This video, produced in 2001 for broadcast by The History Channel, outlines the first 150 years of the YMCA's history in the United States. Viewing time for each part is about 7 to 10 minutes.

You can also explore an online timeline of the first 150 years YMCA history in the U.S. and a list of Milestones in Y History (from the Y-USA web site)

Video part 1
Part I: Introductions and Origins
(note: first 14 seconds are black/silent)