Yesterday I posted the first few pages from a book I am scanning on LAvoice.org and last night, as recommended by Mack Reed, I finished a Google Maps API mashup showing the buildings from the scans so far... check it out here.
I have begun posting a series or scanned engravings and text from Los Angeles From an "Auto", which is an old tourist guide to LA from 1906. The tours took place atop motorized electric coaches and stopped at all the Downtown Hotels. After each installment I plan to follow up with a current photo of the buildings that are mentioned. Here is the first in the series on LAvoice.org, the current photos are coming soon.