Organizing a subject as diverse as Canadian history into periods is a challenge. Canadian history spans hundreds of years, covers events from different angles and contains cultural, thematic and political dimensions. To understand how to logically organize history into periods, it is helpful to refer to Canadian historical sources. Two historical texts by Bumstead and Silver will be examined. Consideration will be given to how they organize Canadian history into logical and comprehensive periods. Each text establishes a chronological framework and, within it, creates historical periods. Each time period is intended to represent as logically as possible the major cultural trends, political and social events, and thematic trends occurring during that time period. Bumstead and Silver describe several broad periods, then delve deeper into each period with a specific focus. Silver has a social orientation within each period, and Bumstead has a thematic orientation. Defining specific periods, which represent the dominant themes and events taking place during the period, is a way of organizing the vast entirety of Canadian history into a logical format. , complete and contemporary. It is useful to use this as a reference point when considering how this topic is organized in the appendices. Canadian Historical Periods in Index Although the Dewey Decimal System contains a complete index, the Library of Congress classification system does not (Taylor 430). Each volume of the LCC lists contains its own index and these indexes do not refer to each other. Finding topics in schedules can be tricky. To locate a subject, one must go through each volume index of all the different disciplines which can...... middle of article ......n in conjunction with other types of classification systems in a library. LCC programs contain a higher level of specificity and detail than DDC programs. This is due to the fact that the subject provides for construction zones of the calendar. The primary users of the LCC may be subject matter experts or those interested in viewing a classification system with a high level of specificity. Works Cited Bumstead, JM, ed. Interpreting Canada's past. 2nd ed. Toronto: Oxford Press, 1993. Print. Jacob, Williams R. Francis Parkman, The Historian as Hero: The Formative Years. Austin: University of Texas Press, 1991. Print.Silver, AI, ed. An introduction to Canadian history. Toronto: Canadian Scholar Press, 1990. Print. Taylor, Arlene G. Introduction to Cataloging and Classification. 10th ed. Westport Conn: Libraries Unlimited, 2006. Print.