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Woods, J. Gerald. “The Progressives and the Police: Urban Reform and the Professionalization of the Los Angeles Police,” UCLA dissertation, 1973.
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Credits
GRATEFUL ACKNOWLEDGMENT is given for permission to use material from the following sources:
Archives and photograph collection, William H. Parker Police Foundation, Los Angeles, California.
Photographs, the Los Angeles Police Historical Society, Los Angeles, California.
LAPD official departmental records, the Los Angeles Police Department; the Los Angeles Police Commission; the office of the Los Angeles City Attorney; and the City Records Center, Los Angeles, California.
The Genealogy and Life Story of Erna and Norris Poulson, by Norris Poulson, Department of Special Collections and Digital Collections, Department of Special Collections, UCLA, Los Angeles, California.
Photographs, USC Special Collections, University of Southern California, Los Angeles, California.
Photographs, Los Angeles Times, Los Angeles, California.
Photograph Collection, Los Angeles Public Library, Los Angeles, California.
Ben Hecht Papers, Newberry Library, Chicago, Illinois; the Hecht Estate; and the William Morris Agency.
Personal collection, Edward Escobar, Tucson, Arizona.