In response to Mike Soik: This is just a sampling of early hunting and/or trapping seasons with bag limits provided by ADF&G. 

Wolves 

Unit 9 - Alaska Peninsula - Aug 10 - June 30 - no bag limits 

Unit 20 - Alaska Interior adjacent to Denali NP & Preserve - 
Aug 10 - May 31st - bag limit - 10 wolves. 

I believe the above season & bag limits previously applied to Denali National Preserve, at least in past years.  At this time, I could't find whether NPS has revised the hunting season for wolves & lowered its bag limits for 2016, although, usually it follows ADF&G regulations regarding such. NPS or ADF&G could certainly confirm the above season & bag limits or inform us of its revisions. 

Grizzly Bear Hunting 

Units 20A, 20B - Sept 1st - May 31st - 1 bear per reg yr, 

Portions of Unit 20B   
Aug 10 thru June 30th - 1 bear every reg year. 

Units 20C, 20D, 20F - Aug 10 thru June 30th - 1 bear every reg yr
Units 20E - Aug 10 thru June 30th - 2 bears every reg year