Are you talking about the book titled: The Color of Water: A Black Man's Tribute to his White Mother ? I don't see why you would want it for apprentices. Is there an HVAC related book by the same title? Anyway, if the above book then it's available used even cheaper:
But I lost my copies. It was a course Peerless boilers gave called "The Color Of Water". I Googled it like you probably did and all I came up with was that J McBride book. You should get in touch with Dan (the man) Holohan about a basic hydronics class. Or that other guy Seigenfalder? something?