Indeed, congratulations to MRJAGUAR!
I'm proud that the eight answers I submitted were correct. [I was too lazy to look up the others.

] Obviously, MrJaguar didn't need to look up story payments or makes and model numbers of the Stone family's spacecraft (or wasn't as lazy as I). I am
impressed ... and I consider myself quite the Heinlein afficionado.
NOTE: As I pointed out to pintail64, Evelyn Cyril Gordon wanted to be known as
'Scar' not 'Scarface'. The line was: "Oh, Scar, I guess." Which, as readers of this
thread probably know, Her Wisdom misinterpreted as "Oscar." [Bragging: I did
not look that up.

]