This chapter makes the case for establishing open historical resource networks. It argues that historical scholarship is a cultural resource and the benefi ts to be gained from its free and wide circulation outweigh what historians stand to gain from allowing their work to be locked within payfor-access online publication systems. Historians would do well to follow the lead of the growing number of scientifi c research communities who have opted to share information openly, not just between researchers, but also with the many constituencies that stand to benefi t from free and open access to high quality information. And historical societies should follow the lead of libraries, museums, and other cultural institutions that are developing freely available online knowledge repositories for all to use.