(1) Mountain Lake located in Little Cottonwood Canyon near Devil's Castle (lower left) was always referred to in diaries and letters as Lake Minnie. On a 1939 map it is labeled as Secret Lake and on later maps as Cecret Lake.
(2) No reference on any of the maps is made of Mt. Robert.
(3) The Twin Lakes and Lake Mary Dams were completed in 1915, 8 years after this map was published.