Kellen Funk and I have just published an article titled “A Servile Copy: Text Reuse and Medium Data in American Civil Procedure” (PDF). The article is a brief invited contribution to a forum in Rechtsgeschichte [Legal History] on legal history and digital history. Kellen and I give an overview of our project to discover how nineteenth-century codes of civil procedure in the United States borrowed from one another. (We will have more soon about this project in a longer research article.)
If you are interested in digital legal history, you might also look at some of the articles which have been posted in advance of the next issue of Law and History Review, which will be focused on digital legal history.