6 Pigs on a Steam Train

Mum has purchased a Fireside Quiz.
It’s one of those numbers/letters ones (e.g. 49 N in TNL = 49 Numbers in The National Lottery), and after Sunday dinner today it provided us with entertainment of the “this family really isn’t normal, is it?” variety.
“240 Old People in a Picnic,” said The Sister, thoughtfully. “What about 21 D in [...]