social conflict involved in creating the state police are located. Based on this analysis, I argue that the emergence of the state police was a product of the progressive reform movement, with the primary motivating factors being the increase in immigration from eastern and southern Europe and the desire to curb the growing labor movement. Support for this argument is found in materials relating to the state police movement in other states. Chapter 8 also addresses the question of state police development within the context of the current debate over why, how, and for whom the police were created. Recent interest in police history has produced a number of studies concerning the emergence of the United States police. As discussed above, three perspectives on police development can be found in the literature: a social disorganization approach that focuses on the impact of industrialization and urban growth; a political process explanation that stresses the impact of competing political factions; and a Marxist approach that advocates a class analysis of police development. In applying these different perspectives to the data on the state police I found that a modified political process perspective offers the best explanation for the state police movement.
Finally, I have included an appendix. Much remains to be done in police history, and the state police offer a wealth of research topics. The appendix incudes a discussion of potential areas in need of further research and a research bibliography intended as a reference tool for police scholars that includes all known published and unpublished books, articles, and manuscripts pertaining to the state police.