“Sixteen Maps Accompanying Report on Forest Trees of North America” is a seminal work by Professor Charles Sprague Sargent, published in 1884 as part of the U.S. Department of the Interior’s Tenth Census. This publication offers a comprehensive geographical analysis of North American forests, focusing on the distribution of major tree genera across the continent. The work is distinguished by its inclusion of sixteen detailed maps that illustrate the extent and variety of forested regions, providing invaluable insights into the ecological landscape of the time.

The maps included in this report serve as a visual representation of the forested areas, highlighting the natural divisions and the prevalence of different tree species. They depict the distribution of genera such as Fraxinus (ash), Carya (hickories), Juglans (walnuts), Quercus (oaks), Castanea (chestnuts), Pinus (pines), Abies (firs), Picea (spruces), Liriodendron (tulip trees), and others. These maps not only chart the geographical spread of these species but also reflect the climatic and environmental conditions that support their growth. The work underscores the vastness and diversity of North American forests, offering a snapshot of the continent’s ecological richness in the late 19th century.

In addition to the species distribution maps, the report includes a map illustrating the relative average density of existing forests in the United States. This particular map provides a quantitative perspective on forest coverage, indicating areas of dense forestation as well as regions with sparse or no tree cover. Such data are crucial for understanding the ecological balance and the impact of human activities like agriculture and urbanization on forested areas. The inclusion of this map highlights the report’s comprehensive approach to forest analysis, combining qualitative and quantitative data to present a holistic view of North America’s forests.

The “Sixteen Maps Accompanying Report on Forest Trees of North America” stands as a significant contribution to the field of forestry and ecological studies. It offers a historical perspective on the distribution and density of tree species, serving as a baseline for future research and conservation efforts. The detailed maps and accompanying analysis provide a valuable resource for understanding the complexities of North American forests and the factors influencing their development. This work remains a testament to the importance of mapping and documentation in preserving and studying natural resources.