1. References:
A. Amtrak Car Spotter, 2nd ed, p 42
B. Railway Passenger Car Annual Volume V 1980-1981, p 23
The information on the conversion dates is in Wayner, Car Names......
2. It would appear the cars kept their 8 [ main ] window configuration after conversion to coaches. How they arranged the seating I don't know; it would be nice to see a diagram. Four sets of facing pairs [ = 32 ] + 4 reversible rows perhaps ?
Best, SZ
PS I think all three were given 474x numbers after conversion to electric heat -- or at least that was the plan. Can anyone confirm ?