I'm using popular song titles of the era in naming the books of the series, and having fun with that. Kitty and Luke don't meet each other in Book I so I'll Be Seeing You seemed a good choice! It's also one of my World War II army vet Dad's favorites, and we asked that it be sung at his funeral. What a moving moment for the family and friends he was leaving behind after a long life well lived.
Here's my dad in 1941...