Everything Changes! - No doubt about that. In the pictures on this page, notice the changes. I offer myself as an example, and please, allow me to NOT write the years, although the last picture is me at 53!
"The Seminary" 1973
Phil Murphy, January 2009
Here are some "Before" and "After" images.
Henry Lauberge on Reiser Street, Daly City, 1940
Reiser Street, Daly City, 2010
Cecilia Seibel and Alice Murphy on Mission Street, Daly City, 1940
Further South on Mission (but you get the idea!)
Composite of two pictures, Mclaren Park, 1940, Cecilia Seibel in Middle
McLaren Park 2010 - This image does not cover the 1940 picture, as there are many changes, but its as close as I could get!