I hunted the Wenaha east and west for a few seasons recently (modern) and saw good numbers of elk. 2 game wardens stopped in our camp one afternoon and provided a TON of information (where they were bugling in September, what times of day they were bugling, where they would look in October if they were us, the camps that had tagged out, etc). Best info I have even been given, very friendly couple guys that seemed to genuinly want everyone to enjoy themselves. I can't for the life of me remember their names, but with a little research I'm sure you could figure out who they were and contact them.
I didn't tag out that year, but the wardens informed us that they had stopped by 5 camps that same day of people that had branch antler tag - and all of them had good bulls hanging. Same with archer season.
Good luck to you! Great tag in a great are