I was cleaning my some old bags and found many letters written to me (or by me) before the advent of emails! It is unfortunate that art of letter writing is dying. Email can't convey the same emotional depth as a letter witten with ink! But I guess everything has tendency to 'fana'! Once existed the art of carving pictures on walls of caves too!
Following is one of the finest letter from Urdu literature, written by Chaudhri Mohammed Ali Rodolvi (one progressive writer from All India 1930s time) to his daughter Huma Begum - narrated by great Zia Mohiuddin.
What makes a letter great is always its last line. You will find all in this letter - humor, philosophy, love, emotional and intellectual depth.