Photo of an enveloppe, where is written the name of the sender and the receiver

Photo of an enveloppe, where is written the name of the sender and the receiver. The sender is : C.S. Balachandra Raju, 29, G.N. Chetty Street, Mylapore, Madras - 4 ; The receiver is Mr. Chithanantham, Thoraipakkam.