The St. Louis Live Steamers is an organization interested in the construction of large scale model railroads, in steam railroad history and operations, and in steam technology generally. The SLLS seeks to share these interests with the general public and provide opportunities in the community for everyone to learn about steam railroad history and technology. The name of the SLLS is taken from the traditional industrial term "live steam" which is steam under pressure capable of doing real work, in contrast to spent or exhaust steam.