A search engine is being created to help historians find useful sources.
The Connected History project will link up currently separate databases of source materials.
"There are a number of electronic resources that have been created by universities and by commercial providers," said Professor Robert Shoemaker from the University of Sheffield which is heading the project. "They are all available, and all separate and some require subscriptions."
"What we are trying to do is join them up to create an integrated search facility so you do not have to conduct more searches than necessary," Professor Shoemaker told BBC News.