This is a short list of a few I've found. No endorsements. Just a list, no endorsements - really. Enjoy!
http://westernbee.com/ - located in Polson, Montana, this is about as close to a 'local' supplier as I know of. Strong supporter of the WY Beekeeping Association as well!
http://prairiewindbeesupply.com - Prairie Wind Bee Supply - Cheyenne, WY. (package bees, nucs and queens only - nothing else)
http://www.fortcollinshoney.com/default.asp - Copoco's - Ft. Collins, CO. (have some stuff, tools, boxes, etc)
http://www.mannlakeltd.com/ - where I've purchased the vast majority of my stuff. If it has to do with beekeeping, they have it. Free shipping on orders over $100.
http://www.dadant.com/ - very popular amongst the commercial crowd as well. The "other" big outfit.
http://www.pierco.net/ - Plastic frames 'n foundation (plays music when you visit)
https://foresthillbeesupply.com/store/ - MJ says "Good prices, hand made Amish woodenware"
http://letmbee.com/do-it-yourself/5-frame-swarm-traps-or-nuc-construction/ - Swarm traps (nucs) from a sheet o plywood. Plans and how to.
http://beehave-model.net/ - Hive/colony modeling software, research tool. Try things out, see what it does. LOTS of variables, bit of a learning curve.