Allama Iqbal is an eloquent poet. Iqbal`s letters introduce Iqbal himself. His letters are the interpreter of his thoughts. Due to  the importance of Iqbal`s letters, many collection of his letters have been published so far. Iqbal had the habit of writing letters from the very beginning. He was very diligent in writing letters. Some of Allama`s letters shed light on his intellectual evolution and important intellectual discussions. Therefore, Iqbal's letters are extremely beneficial and important for the readers and researchers of Iqbaliat.

Atta ullah,sheikh, Iqbal Nama, Hisa Dom, (Lahore: Sheikh Muhammad Ashraf, 1951)

Rafi ud Din Hashmi, Allama Muhammad Iqbal, In: Tareekh Adbiat Musalmanan e pakistan  o Hind, Vol. 5, (Lahore: Punjab University, 2012)

Sabir Kalorvi, Iqbal k Humnasheen,(Lahore: Maktibah Khalil, 1985)

Muzafar Husain Barni, Kulyat Makatib Iqbal, Vo. 1, (Delhi: Urdu Academy,1989)

Rehman. S.A. Makatib e Iqbal Banam Khan Niaz ud din Khan, (Lahore: Bazm e Iqbal, 1954)

Bashir Ahmed Dar, Anwaar e Iqbal, (Lahore: Iqbal Academy, 1977)

Muzafar Husain Barni, Kulyat Makatib e Iqbal, Vol. 4, (Delhi: Urdu Academy, 1998)