He searched his pockets.

"Here is one out of the ordinary.

It is unsigned, so I feel no qualms of conscience in letting you read it." Patty took the envelope with suppressed eagerness.

She drew out the letter and read it slowly.
"Do you receive many like that ?" she asked, folding the letter and returning it.
"Very few; that's why I treasure it.

I should like to meet the writer; but that's impossible.