I thought this might be a good topic for the Lost Dutchman Mine. Hopefully it can give a little insight into what Phoenix was like in Waltz's time, might even answer a few questions or at least raise quite a few. If anybody has other links to add, Please do.
http://phoenix.gov/webcms/groups/internet/@inter/@dept/@dsd/documents/web_content/pdd_hp_pdf_00044.pdf
http://phoenix.gov/webcms/groups/internet/@inter/@dept/@dsd/documents/web_content/pdd_hp_pdf_00044.pdf