I may have brought this up before, but I keep marveling over how Utah's Kings Peak -- today's bonafide highest version -- was unknown until 1966, when satellite measurements were taken of Uinta Mountain Peaks.
I've heard of some old-timers who actually went to today's South Kings Peak (16 feet lower than today's Kings Peak), before 1966 and new don't realize the high point changed.
Ironically, the main path to Kings in pre-1966 was essentially the same and hikers would skirt by today's Kings summit within 10-20 feet en route to South Kings. Maybe some summitted today's Kings as they went by it, but none knew it was truly the tallest until 1966.
Do some other states have similar highpoint evolutions?