When I bought a copy of the Encyclopedia of Indian Cinema on my visit to India, at the Delhi Book Fair decades ago, I read carefully about where they got all the information from. I was pleased to see the big mention of Har Mandir 'Hamraaz' work. Among regional languages I saw the name Murlidhar Soni and his forthcoming book on Rajasthani Cinema. I also saw the name M D Soni for Bhojpuri cinema.
I always suspected that both are the same person, and he is. I understand that his book is finally coming out after more than two decades.
He is my Facebook friend and a well-known Hindi journalist. I am honored to know him.
Now You Know!