When I climbed the south summit a few weeks ago I found a USGS summit marker that gave the elevation 13,167'. Clearly the other two summits were higher, but I did find the summit marker on the south with a different altitude than what the topos give. A little strange, considering the south summit is the smallest of the three.
"After the first glass, you see things as you wish they were. After the second, you see things as they are not. Finally, you see things as they really are, which is the most horrible thing in the world."
--Oscar Wilde on Absinthe