^Don Valley Parkway Extension, Highway 401 to Steeles Avenue (报告). Desjardines. 1957.
^Summary Report of Department Operations. Annual Report (报告). Department of Highways: 7. March 31, 1960.
^New Highway Route Metro to Newmarket. The Globe and Mail 117 (34,636) (Toronto). December 14, 1960: 5. Highway Department officials tonight outlined the proposed route the new No. 404 Highway will follow from Steeles Avenue to the Newmarket area.
^ 8.08.1
Dexter, Brian. Ontario Studies Plan to Extend Highway 404 Farther North. The Toronto Star. October 25, 1989: A8.|section=被忽略 (帮助)
^ 9.09.19.2Construction Program: King's and Secondary Highways (报告). Ministry of Transportation and Communications: XV. 1976–77.
^Headache on the 401. The Globe and Mail (Toronto). May 4, 1976: 5.
^Construction Program: King's and Secondary Highways (报告). Ministry of Transportation and Communications: xvii. 1975–76.
^Public and Safety Information Branch. Highway 404 (Steeles Ave. to Highway 7) Opens Nov. 10 (新闻稿). Ministry of Transportation and Communications. November 9, 1978.
^Public and Safety Information Branch. Official Opening of Highway 404 Between Major Mackenzie Drive and Gormley (新闻稿). Ministry of Transportation and Communications. December 9, 1980.
^Stevens, Victoria. York Councillors Fly Over Their Region's Traffic Chaos. The Toronto Star. January 21, 1981: A29.|section=被忽略 (帮助)
^Ministries at Loggerheads Over Extension of Highway. The Globe and Mail (Toronto). May 26, 1981: 5.
^Keating, John. 404 extension opens Aug.10. The Toronto Star. August 3, 1982: 11. The public is cordially invited to attend the OFFICIAL OPENING of Highway 404, from Gormley Road to Bloomington Side Road on Tuesday, August 10, 1982 at 11:00 a.m. on the southbound lanes of Highway 404 at Bloomington Side Road.|section=被忽略 (帮助)
^New Stretch of 404 to Open. The Toronto Star. September 10, 1985: NR12. Highway 404 should be open to the Aurora Sideroad by the end of September, a Ministry of Transportation official said last week.... Tenders for the next and final stage of the highway from the Aurora Sideroad to Davis Drive in Newmarket will be called in December and awarded in January the spokesman said.|section=被忽略 (帮助)
^Van Rijn, Nicholaas. Longer, Wider Highway 404 In the Works. The Toronto Star. August 29, 2000: B3.|section=被忽略 (帮助)
^Casey, Patrick. Drivers have more options in northern York Region after improvements to Green Lane East and Highway 404. News (Regional Municipality of York). February 8, 2002 [April 26, 2011]. (原始内容存档于2011年7月21日). York Region drivers can now access Green Lane East between Leslie Street and Woodbine Avenue in the Town of East Gwillimbury. The Regional Municipality of York today opened the stretch of road in tandem with the completion of a 2.9 kilometre extension of Highway 404 from Davis Drive and Green Lane East.
^Ministry of Transportation of Ontario. Eves government to open Highway 404/16th Avenue interchange in Richmond Hill. Government of Ontario. June 19, 2003 [May 28, 2011]. (原始内容存档于2003年7月15日). Transportation Minster and Oak Ridges MPP Frank Klees and Associate Minister of Municipal Affairs and Housing and Thornhill MPP Tina Molinari will open the new Highway 404/16th Avenue interchange in Richmond Hill.