Report to Hon. A. V. Brown Postmaster-General is a comprehensive historical document that offers a detailed account of the state and operations of the United States Post Office Department during the mid-19th century. Compiled and presented to the Honorable Aaron V. Brown, who served as Postmaster-General under President James K. Polk, this report provides an in-depth analysis of the postal system's challenges, achievements, and ongoing reforms during a period of rapid national expansion and technological change. The report meticulously covers a wide range of topics, including the financial status of the department, the efficiency and reliability of mail delivery, and the logistical complexities of serving a growing and geographically diverse nation. It discusses the introduction of new routes, the establishment of post offices in remote and frontier regions, and the adoption of innovative methods to improve communication across vast distances. The document also addresses the impact of the expanding railroad network, the use of steamboats, and the integration of new territories into the postal system. In addition to operational details, the report delves into policy recommendations aimed at enhancing the effectiveness and sustainability of the postal service. It highlights the importance of affordable postage rates, the need for improved infrastructure, and the significance of maintaining public trust in the reliability and security of mail delivery. The report also reflects on the broader social and economic implications of a well-functioning postal system, emphasizing its role in fostering national unity, supporting commerce, and facilitating the exchange of information. Rich in statistical data, administrative insights, and firsthand observations, Report to Hon. A. V. Brown Postmaster-General serves as a valuable primary source for historians, researchers, and anyone interested in the development of American public services. It captures a pivotal moment in the evolution of the U.S. postal system, offering readers a window into the challenges and innovations that shaped communication in 19th-century America.