According to rumors, Blackburn Bellows was backed by a mysterious force of wealth and influence. These rumors would also explain how Blackburn Bellows never got closed down, despite its numerous run-ins with city health and worker regulations.
In 1868, Clara O'Dea asked the Assassins to combat child labor throughout London in exchange for information from her orphans. Jacob and Evie Frye agreed to this, and infiltrated Blackburn Bellows. After freeing the child workers and killing the overseer, the Rooks were able to wrestle the facility from Blighter control.