The National Model Railroad Association (NMRA) is a nonprofit organization dedicated to promoting the hobby of model railroading. Founded in 1935, it provides resources, standards, and guidelines to help modelers create realistic and enjoyable layouts. The NMRA also hosts events, conventions, and competitions, fostering a sense of community among enthusiasts. In addition to supporting hobbyists, the NMRA develops technical standards for model trains and accessories, ensuring compatibility across different brands. This helps modelers build and expand their collections without worrying about mismatched components. The organization also offers educational materials and programs to enhance skills and knowledge in the hobby.