GETTING A LETTER

I am a student at Washington University. I am very busy with my studies, but I always find time to write several letters every week. I like to receive mail and you have to werite letters if you want to hear from your friends.
I was quite disappointed this morning. The postman delivered the mail and I received five letters, a package, and two postcards. But I didn’t get the letter I was waiting for.
Later in the day, the mailman delivered a special delivery letter. I was very happy to receive it, and I think you will understand why when I let you read the letter. This is the letter :
Dear Jim,
This is your first year at the University and the first time you have been away from home on your birthday.
Your mother and I miss you very much. We often talk about how quickly you have grown up. We know you’re very busy at the university, but we’re glad you are able to write to us so frequently.
Both your mother and I are fine, and your younger brothers are in good health, too. They asked me to wish you a happy birthday for them.
I am enclosing some money as a gift for your birthday. You can buy whatever you wish with it.
Write to us whenever you can. We would enjoy seeing some photograph of you and the University.
Love, Dad.