Plenty of E-6 around here (New York), but if I don't need the quick turnaround of a local lab, I use A&I mailers for 35mm and 120. They're cheaper than the local pro labs and just as good, and they do 35mm Kodachrome, including push processing (probably the last to offer K-14 push, as far as I know).

That said, if you had to, you could do your own E-6.