I am just about finished reading his book on the golden decade, for Lionel, in the fifties. I've found it quite good. Yes, there are a few spots where he may have gone into too much detail as far as item and set numbers, but I speed read through those few sections.
1959 is the last year he talks about. When JLC sold his stocks to Roy Cohn which undermined Lawrence's power, as he puts it. Two long time employees were let go also.
We tend not to think of the old Lionel as a corporation run by people who're interested in the bottom line only. But basically it was. More so, it seems, as the decade wore on.
If you are looking for a good read about our favorite subject, it's worth the price.