After much thought, he relinquished the post of CEM on 14th June 1974 and voluntarily took up the noble but heavy task of collecting and preserving old documents, records, books and other materials relating to the past history of Hynñiewtrep people. So, SRCC came into existence on the 8th Sept 1974 at his residence at Riatsamthiah, Shillong. In January 1986, Mr. Shullai and his family shifted to Nongthymmai, Shillong. For the past many years, the SRCC has established for itself a prominent place for the study of and research into the history (both political & cultural) of the land and people of Hynñiewtrep. The centre is a house of knowledge that will continue to feed the wisdom-seekers and take the role of an instrument for academic production and pursuit. Additionally, the SRCC, besides serving as a library of historical materials, documents, photos, old newspapers, and magazines containing articles and write-ups, also houses materials, works, and books compiled or authored by Mr. Shullai.