In the spring of 1893, media titans George and Sarah Joslyn bought a farm in Omaha, Nebraska, that would prove to be one of the city's most noteworthy real estate transfers. On this land, the Joslyns would construct a transformational home that would become an Omaha landmark known as Joslyn Castle, a Scottish baronial-style home built of limestone from neighboring Kansas. They chose their good friend, Canadian-born architect John McDonald, to design...