University of California Transportation Center

This paper is collaborative in every respect. Jacobs conceived of the study and was the overall director of the research. Macdonald administered the project. Detailed tasks were jointly organized and fieldwork was done by all four authors, usually in groups of two or three. Marsh and Wilson undertook the general historic research. Following identification of the streets to be documented, each author took responsibility for a number of streets. The comparative analysis matrix was first conceived by Jacobs but was modified by discussion and prepared in its final form by Marsh. The final form of the typologies, after joint development, was by Macdonald. For the report, Marsh and Wilson wrote the initial drafts of the history and Macdonald wrote the chapter on research methods. Individual authors prepared the text and graphics for the streets they worked on: Jacobs for streets in Cleveland, and for Chattanooga, Franklin, and Stockton Boulevards in Sacramento; Macdonald for San Francisco and Los Angeles streets; Marsh for the greater number of Sacramento streets, and for the Richmond streets with Wilson doing the final draft; and Wilson for the Oakland street. Wilson wrote the first draft of the comparative analysis of the matrix and Macdonald wrote the chapter on typologies, although the analysis and conclusions were arrived at jointly. Jacobs prepared first drafts of the introduction and concluding chapter. All four authors reviewed all drafts and Jacobs was responsible for final editing.