Alejandro Calderon said he thought it was a joke.
The mailman had just delivered a letter to St. Anthony's Catholic High School that was postmarked Dec. 22, 1948.
The letter, addressed to a student at then-named St. Anthony's Apostolic School, had been lost for more than 60 years.
Calderon, a research-minded individual, started trying to find the intended recipient, George King.
After a series of phone calls, he tracked down King living in a Colorado Springs, Colo., assisted living facility.
The first thing King asked his over the phone was, "Did you ask the mailman what took him so long?" King then asked Calderon to send the letter to him.
A couple of days later, Calderon was in for an even bigger shock. A package from the Denver post office arrived... with nine more letters.
All of them were addressed to George King, and all were postmarked between 1948 and 1950. Calderon called King once again.
This time, Calderon said he wasn't going to take the chance of the letters becoming lost for another six decades. So he told King he would bring them to him.
Last Thursday, Calderon and Dan Ochoa from St. Anthony's delivered those letters to King in Colorado Springs.
King was obviously excited to receive letters written to him when he was a young seminary student at St. Anthony's. The letters were from a cousin, an uncle and most importantly, his mother.
Keeping with his sense of humor, King said he was even going to call his cousin, who's one year older than him, to let her know he received her letter.
