For anyone who has read the Kite Runner, why did Amir not contact Hassan sooner when he got the letter?

I haven't read it, but something in here may help you.

The Kite Runner - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/The_Kite_Runner
The Kite Runner is a novel by Khaled Hosseini. Published in 2003 by Riverhead Books, it is Hosseini's first novel, and was adapted into a film of the same name ...

The Kite Runner Summary at WikiSummaries, free book summaries
http://www.wikisummaries.org/The_Kite_Runner
Hassan is a successful "kite runner" for Amir, knowing where the kite will land without even watching it. One triumphant day, Amir wins the local tournament, and ...

The Kite Runner Study Guide : Summary and Analysis of Chapters 1 ...
http://www.gradesaver.com/the-kite-runner/study-guide/section1/
The Kite Runner begins with our thus-far nameless protagonist explaining that the past cannot be forgotten. A single moment in time defined him and has been ...

The Kite Runner by Khaled Hosseini CliffsNotes - Study Guide and ...

The Kite Runner, by Khaled Hosseini , follows the maturation of Amir, a male from Afghanistan who needs to find his way in the world as he realizes that his ...