I came across a website devoted to the work of John Parkinson, a California architect who’s famous for his work in Los Angeles around 1900.
How famous? Well, Parkinson is credited with building the first skyscraper in downtown LA, but I suppose that agreement depends on your definition of what a skyscraper is.
The website has a really neat map of downtown LA which lists the survivng buildings that Parkinson worked on. Just the thing for a walking tour.