Focusing on land tenure patterns from 1860 to 1980, this study is a chronological socioeconomic interpretation of the history of northern New Mexico. Chapter One describes the development of the Pueblo Indian land use system prior to colonization. Chapter Two deals with the first colonial period (1598-1693) of land tenure in northern New Mexico. Chapter Three covers the Spanish colonial period after reconquest up to the independence of Mexico in 1821. Chapter Four discusses the historical period during which New Mexico was a part of the Republic of Mexico (1821-1848). Beginning with the cession of northern Mexico to the United States in 1848, Chapter Five describes the capitalist development of the area and the legislation that was passed during the next half century. Chapter Six analyzes the effects of capitalist development on the Pueblo Indians and on the Mexican agricultural communities of northern New Mexico. A bibliographical essay sets forth the criteria used in selecting reference materials for this report. (CM)