[1] The music of the film is by Khayyam and lyrics by Kaifi Azmi; it includes the song "Baharon Mera Jeevan Bhi Sanwaro", sung by Lata Mangeshkar.

[4] The film was remade in Tamil as Poonthalir starring Sivakumar and Sujatha in 1979, in Telugu as Chinnari Chitti Babu in 1981[5] and in Turkish as Garip Kuş in 1974.

Later, he shows the Police inspector Naik (Manvendra Chitnis) the statue of Lajjo he has kept in his studio.

Rajesh Khanna disclosed in an interview, "I consider “Aakhri Khat” a memorable film of my initial days.

I still clearly remember how cinematographer Jal Mistry shot the song sequence, “Ab Na Ja” on me and Indrani Mukherjee in five to six close ups also picturising the natural panorama of the Himalayas with rare aesthetics and perfection.

My most challenging scene in “Aakhri Khat” was the last one where I am in a pensive mood in silence till I recognise my son, Bunty.

Chetan Anand used to wake me up with late night phone calls so that my face had the ideal pathos oriented look.