National Football League | National Register of Historic Places | National Hockey League | England national football team | National Basketball Association | National Science Foundation | National Geographic | National Trust | National Endowment for the Arts | National Geographic Society | Argentina national football team | National Trust for Places of Historic Interest or Natural Beauty | National Park Service | National League | Australian National University | Black Forest | National Guard | National Geographic Channel | National Institutes of Health | National Guard of the United States | National Collegiate Athletic Association | United States National Research Council | National Portrait Gallery | National Academy of Sciences | Indian National Congress | United States men's national soccer team | National Research Council | Royal National Theatre | National Gallery of Art | Mexico national football team |
Banner Lassen Medical Center and Lassen College in Susanville, Lassen County, California, Lassen National Forest, Lassen Peak and Lassen Volcanic National Park are named after him.
Operates Camp Fleischmann near Chester, California in the Lassen National Forest for Boy Scout Summer Camp and Cub Scout Resident Camp.