This page links to documents about the subway extension to Richmond Hill some of which are no longer available elsewhere.
- June 2009: Yonge North Subway Extension Benefits Case
- May 2013: Yonge North Subway Extension Benefits Case
- June 2020: Yonge North Subway Extension Initial Business Case
- March 2021: Yonge North Subway Extension IBC Option 3 Refinement: Supplementary Analysis
- 2009: Environmental Project Report
- March 2012: Conceptual Design Report
- 2014: EPR Addendum : Train Storage Facility