Nineteenth-century photographer Carleton Watkins is perhaps best known for his photographs of Yosemite, which inspired the preservation of this land and, later, the creation of the National Parks system in the United States. But his unusual life and tumultuous career is rarely examined. In this episode, art historian Tyler Green discusses Watkins and the impact of his photographs. Green is author of Carleton Watkins: Making the West American and host of the podcast Modern Art Notes.