You tried going to https://sportfacilities.ubc.ca/files/2014/05/Thunderbird_Winter_Sports_Centre_1968_Expansion_Facing_Southwest_May_30_1969.jpg, and it doesn't exist. All is not lost! You can search for what you're looking for.
https://sportfacilities.ubc.ca/files/2014/05/Thunderbird_Winter_Sports_Centre_1968_Expansion_Facing_Southwest_May_30_1969.jpg