History of the BLM | Bureau of Land Management Skip to main navigation Official websites use .gov .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS lock ) or means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. Flickr History of the BLM Our Heritage, Our Future In many ways, the history of the Bureau of Land Management is the history of the growth and development of the United States. The BLM was formally established in 1946, but its roots go back to the years after America’s independence, when the young nation expanded.  At first, these lands were used to encourage homesteading, westward migration, and economic benefits to the national treasury and citizens. The General Land Office (GLO) was created in 1812 to support these national goals. Over time, values and attitudes regarding public lands shifted, and at the urging of President Truman, Congress merged the GLO and another agency, the U.S. Grazing Service, to create the BLM. Today, the BLM administers more surface land (245 million acres, or one-tenth of America’s land base) and more subsurface mineral estate (700 million acres) than any other U.S. government agency. The BLM’s mission, which is principally defined in the Federal Land Policy and Management Act of 1976 (FLPMA), directs the agency to carry out a dual mandate: that of managing public land for multiple uses while conserving natural, historical, and cultural resources. In the language of FLPMA, the BLM is to administer public land resources “on the basis of multiple use and sustained yield.” To better understand the history, culture, and impact of the BLM, we recently established the History Initiative. The Initiative's goal is to build a program that enlightens the public and our employees to the special place in history that the agency has played in managing our public lands. The initiative intends to achieve this goal by with our partners, ensuring a systemic process for preserving the BLM’s important history; capturing and organizing the BLM’s administrative history in a comprehensive repository for physical, digital, and oral material; and making relevant, timely historical information accessible to BLM staff and the public, as appropriate. History Initiative team members work with BLM staff, retirees and key partners including members of the many sovereign tribal nations, to research and communicate the rich history of the BLM. We hope that a tapestry of context and connections will guide our agency from who we were to who we aspire to become. Discover the national history of BLM lands and resources Read about the BLM regional history Experience History Love historical sites?  Dig dinosaurs?  Then these web pages are for you: People have inhabited lands now managed by the BLM as long as human memory. As a result, the public lands connect the past and the present through ongoing traditional uses and by holding invaluable evidence of human history. Learn more! Cultural Heritage People have inhabited lands now managed by the BLM as long as human memory. As a result, the public lands connect the past and the present through ongoing traditional uses and by holding invaluable evidence of human history. Learn more! Love dinosaurs? The BLM paleontology program works to preserve and protect paleontological resources for the benefit of current and future generations. We facilitate insightful research. Learn more! Paleontology Love dinosaurs? The BLM paleontology program works to preserve and protect paleontological resources for the benefit of current and future generations. We facilitate insightful research. Learn more! Opportunity and Challenge: The Story of the BLM (1988) Our Heritage, Our Future (2018)