Harbans Singh (1921-1998) was an educationist, scholar and author, and the editor-in-chief of the landmark four-volume Encyclopaedia of Sikhism. He was widely acclaimed for his contributions to Sikh scholarship and Punjabi literary studies. Among his best-known works are Guru Nanak and Origins of the Sikh Faith; Heritage of the Sikhs; and biographies of Guru Nanak, Guru Tegh Bahadur, Guru Gobind Singh, Maharaja Ranjit Singh and Bhai Veer Singh. In 1999, during the Khalsa Tercentenary Celebrations, he was posthumously invested with the Order of the Khalsa.