Scans from the SER zone section of the 1977 All-India Timetable, provided by Mani Vijay.
Table 19A (SER) : Cuttack-Howrah - from 1977 All-India TT. The Coromandel used to bypass Cuttack and go via Naraj Marthipur. The Madras-Howrah Janata Exp. is extinct. (Mani Vijay)
Table 19 (SER) : Howrah-Kharagpur-Vizianagaram - from 1977 All-India TT. FOR CORO FANS - note the jaw-dropping schedule of the Coromandel Exp. Non-stop run from Howrah to Bhubaneswar. Just a 2 mt. halt at Bhubaneswar. (Mani Vijay)
Table 19/19A (SER) : Vizianagaram-Waltair / Waltair-Cuttack - from 1977 All-India TT. No commercial halts for Coromandel between Bhubaneswar and Waltair (now Visakhapatnam). I believe it had a tech. halt at Khurda Rd. (Mani Vijay)
Table 1 (SER) : Howrah-Tatanagar-Nagpur - from 1977 All-India TT. Bombay Mail and Ahmedabad Exp. had the same halts between Howrah and Bilaspur. The latter actually skipped Bhatpara. Kalinga and Utkal were separate trains. (Mani Vijay)
Table 1A (SER) : Nagpur-Tatanagar-Howrah - from 1977 All-India TT. Kalinga Exp. had a non-stop run from Bilaspur to Jharsuguda. (Mani Vijay)