In the United States, many science-fiction societies were launched as chapters of the Science Fiction League and, when it faded into history, several of the original League chapters remained viable and were subsequently incorporated as independent organizations. Most notable among the former League chapters which were spun off was the Philadelphia Science Fiction Society, which served as a model for subsequent SF societies formed independent of the League history.
In the United States, many science-fiction societies were launched as chapters of the Science Fiction League and, when it faded into history, several of the original League chapters remained viable and were subsequently incorporated as independent organizations. Most notable among the former League chapters which were spun off was the Philadelphia Science Fiction Society, which served as a model for subsequent SF societies formed independent of the League history.