Kripke and A. N. Prior had previously corresponded at some length. The clustering corresponded closely with ethnicity, culture and language. But Hincks' and Rawlinson's versions corresponded remarkably closely in many respects. Delpino's study was inspired by a disagreement with Charles Darwin, with whom he corresponded regularly. These were the first steps in forging a theoretical tradition that corresponded to chant. He was inspired by the poetry of Walt Whitman, with whom he corresponded. Many had corresponded with him, "each believing that she was his only one". Although never employed by L Brands, he corresponded frequently with the company executives. He corresponded with his many friends and colleagues. She also corresponded with various relatives. Zachary corresponded with temporal rulers as well. Indeed, according to Mamluk sources, Nawruz corresponded with Sultan Lajin. This period also corresponded to the Progressive Era, and was dominated by the Republican Party. During this time, Farmer and Edith corresponded occasionally via letters. They corresponded over the years, and grew to be good friends.