transit) Aurora Transit North Yonge Railways – provide transit service to the Yonge Street area of Markham (Thornhill) from 1930 to 1948 Metropolitan / Lake Simcoe Line – provided transit service to the Yonge Street area from 1897 to 1930 References Markham Transit 1990 Rider's Guide Markham Transit Fall 1994 Rider's Guide Markham Transit Fall 1999 Rider's Guide Markham Transit 2000 Rider's Guide Transit History...Markham Transport in Markham, Ontario History of Markham, Ontario Transit agencies in Ontario York Region Transit