In these two maps of San Francisco, I chose to clean up and highlight my earlier dataset of San Francisco Brokers. As an Econ major I’m very interested in the developments of markets and business structures in an area, and the physical geography of markets in Early 1900s San Francisco seemed like just the way to bring this blog topic to life for me.

As far as work flow goes, I used the 1907 Croker-Langley phonebook to attain the names and addresses of 60 brokers in the San Francisco area. I figured that because it would take a lot of research and data in order to map the different markets of San Francisco, that it would make sense to simplify those requirements into something that would most likely be connected to the geography of those markets. The brokers for different markets and different goods, I reckoned, would gravitate to areas close to the markets they work in, especially in a time before cars and major transportation projects existed. I took these names and addresses, cleaned up from the phonebook to be up to date on street names, addresses, and to make sure that none of the text was distorted between the phonebook PDF and the text editor and then put it all on the map! The two maps I made were a category map and a density map. The category map is interesting because it can show where individual markets are (i.e. Grain brokers, or House Brokers and how their locations differ and what that says about where the people buying/selling those things were at that time.) I thought the density map was useful because it could show you where the general centers of business were in 1907 San Francisco based on where the most brokers were in general.

Some shortcomings is that a lot of the brokers ended up being clumped together in the category map, not really displaying much difference. I tried to play around with sizes and images in order to make it clearer and drop some of the overlap, but nothing really worked without cutting out other pieces (either making the map so small the outskirt items were lost or changing the pins and rotating which ones were overlapped) Another issue I came across is that a lot of the Brokers are simply “general brokers” which could mean anything and doesn’t really say too much about the individual category but it still helpful on the density map.

The only things I ended up using/needing to use were Carto, GPSVisualizer, and the 1907 phonebook.


Carto. Web 30 Oct. 2016

Crocker-Langley San Francisco Directory 1907. San Francisco: H.S. Crocker, 1907. Internet Archive. Web. 30 Oct. 2016

“GPS Visualizer’s Address Locator.” GPS Visualizer’s Easy Batch Geocoder: Convert Addresses to Coordinates. N.p., n.d. Web. 30 Oct. 2016