Sugar Loaf, Mackinac Isl'd, Negative copyrighted 1900., Corresponding glass transparency (same series code) available on videodisc frame 1A-29422., Detroit Publishing Co. no. 012318., Gift; State Historical Society of Colorado; 1949, Rock formations. , United States, Michigan, Mackinac Island (Island)

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Keywords: (, ., formations., island, rock, states--michigan--mackinac, united