"We are absolutely delighted to know that it is your 80th Birthday. Kindly accept our HEARTY CONGRATULATIONS. We have found in you a magnanimous, kind-hearted, discipline-loving, very humble and noble Mentor, who has guided us in our researches with bacterial transformation and neuroanatomy of chemosensory systems of Drosophila. All our achievements would not have been possible without your kind support and blessings. We are grateful to you for all the help, excellent support and able guidance through these many years. We wish you and your Wife a long, healthy and peaceful life. Yours sincerely, --RN Singh and Kusum Singh"