Professor Sunderland describes the history, and current directions, of declaratory judgments. "The practice of making declarations of right has completely revolutionized English remedial law. The American lawyer who peruses the current English reports is bewildered by their novelty...."
Sunderland, Edson R. "Preventive Justice through Declaratory Relief." Proceedings of the Iowa State Bar Association 27 (1921): 80–97.