అస్సాం మెయిల్‌ ట్రైన్ ను ఎప్పుడు ప్రారంభించారు?
The Assam Mail was one of the better known metre gauge trains in the Indian Railway system that was there from the pre-independence days. The train was discontinued in 1986 with the completion of the broad gauge conversion of the meter gauge line to Dibrugarh.
pre-independence