I'll be elk hunting in the area in Sept and looking for someplace which might have dry ice to keep the meat cold for the drive home. (I like to think positive and be prepared!:hump
Not specific to your question but in towns with any size I always find dry ice at the nicest grocery stores.
It can be a little embarrassing going into a nice store after a couple weeks in the field.
If dry ice is hard to come by, just debone and put the meat in gallon zip locks on wet ice. Just try to keep the water drained off so the meat does not get wet.