Document, Eastern Corridor Study, 9/10/1975 Physical description Bulletin, Eastern Corridor Study (Combining Koonung and Ringwood Studies) issued by the study consultants, Alan M. Voorhees & Partners P/L, Bulletin No 3, 9 October 1975: Routes 'A', 'B' and 'E' - Ringwood Sector, Lines of minimum impact. Keywords eastern freeway, alan m. voorhees & partners p/l, roads and streets, freeways, ringwood, mitcham