http://www.foundsf.org/index.php?title=Dr_Weirde_on_Dirty_Harry
https://movie-tourist.blogspot.ca/2015/08/dirty-harry-1971.html
https://dirtyharryfilminglocations.wordpress.com/555-california
https://www.google.ca/search?biw=1536&bih=760&tbm=isch&sa=1&q=clint+eastwood+as+Dirty+Harry+on+top+of+the+b+of+a+tower+in+san+francisco
http://www.sfgate.com/news/article/The-top-10-films-shot-in-San-Francisco-3286355.php
http://www.aerialarchives.com/stock/img/AHLB3338.htm
http://www.aviewoncities.com/de/sanfrancisco/bankofamericabuilding
