I'm in New York, and I've ordered such things from fotoimpex.de. I try to make it a large enough order to justify the shipping, but it's quick and cheap, and Mirko is friendly to work with.

B&H has been listing some Forte films. Maco materials are sometimes sold in the U.S. under the "Cachet" brand. If you're more comfortable ordering from Canada, there's Eight Elm, which imports some East European materials. Freestyle in L.A. has sometimes sold some of these things, but I don't believe they currently carry Efke.