MY DEAR NIVEDITA,
The address of my cousin is 127 Manicktala Street. The husband’s name is Durga Prasanna Bose. The wife’s name is most probably not known to the people you will meet in the male department. Therefore it is the custom to ask for the wife of so-and-so.
Manicktala Street is that which runs east and west, south of the tank garden.
Yours with love,