Auto Train Sleepers

Does anyone have diagram of the 11-bedroom cars on the Auto Train?

In one travelogue, I read that someone had room M. However, M is not in the first 11 letters.

Do these cars have a normal lower level?

Yes, the Deluxe Sleeper as it's called, has a normal lower level. Additionally, there are only 10 bedrooms in the car, not 11. The reason that M is one of the letters used, is the fact that the Family room is room F (it's also called #15 too), the Accessible room is room H. That brings us to I, which I believe was skipped by Amtrak to avoid confusion with the #1. So therefore with the normal A - E in use on the one side, the other letters used or rejected as explained above, Amtrak started with J and went through N for the 5 bedrooms on the other side.

Here ya go...