This edition in the series of scans from the 1906 electric coach tour guide entitled Los Angeles From an "Auto" takes us deeper into the Old Chinese Quarter and then to the original heart of the city, when it was just a tiny Spanish pueblo. This portion of the book is less of an advertisement for the hotels of Downtown and more of a glimpse into the unique history of the City of Angels. In case you missed them, the first three sections can be found here: Part 1, Part 2 and Part 3.
Check out the google map which shows the locations of the buildings shown in the guide along with a few (soon to me many) photos of the buildings as they exist today. The engravings from this section will be posted soon thanks to the historical address finding wizardry of Eric Richardson, who has already helped find several of the addresses for the map.
UPDATE The story has been boingboinged
[oops they said 1909 instead of 1906] fixed... thanks Cory!