For 18 years, my son received a mysterious envelope every birthday—when he finally opened the last one, he discovered who had been sending them all along

I can legally start being annoying in a more dignified way.”

He rolled his eyes.

“Please don’t ruin the emotional ending.”

I laughed.

“Too late.”

He looked at the stack in his hands, then back at me.

“I think I’m going to frame one.”

“One of the cards?”

“No.”

He tapped the first letter.

“Grandpa’s first one.”

That nearly made me continue reading …