Who is Chet Morrow from Song of Kali and what is their importance?

Chet Morrow is the editor of Harper's magazine. Morrow commissions the narrator, Robert C. "Bobby" Luczak, a minor poet, to fly to Calcutta, India, and collect newly-found materials from the supposedly-deceased poet M. Das. Morrow arranges for M. L. Chatterjee of the Bengali Writers' Union to pick them up at the airport and settle them in their hotel.