Adobe(R) Acrobat (PDF) Download. The complete principal text files on this web site may be downloaded as a single "PDF" file. The file size is 345 Kb and may take up to 5 minutes to download. It may be read within the free Adobe Acrobat reader and printed on any printer. Get free Adobe Acrobat Reader Download Philip J. Ethington, "Los Angeles and the Problem of Urban Historical Knowledge" e-AHR, December 2000.