Mr. Postman

"Oh yes, wait a minute Mister Postman, wait mister postman, please mister postman, look and see, if there's a letter in your bag for me, why's it takin' such a long time, for me to hear from that boy of mine"

(Some lyrics from Mr. Postman song by The carpenters)

Have you hear that song? yeah, that song popular in early 1975. It's talking about two lovers in long distance relationship, and they have to write a letter to keep in touch each other. 

Mr. Postman

I really like him, cause of his uniform, activity and equipment for his job. 

His duty, deliver card to people who waiting news from their relative.