Duck stamp issued in July. 

Other stamps issued (all non-pictorial):
Furbearer (resident, non-resident)
Sportsman (resident)
General game and habitat (resident, non-resident)
Small game (resident=duck stamp, non-resident)
Non-game (non-resident)
Fishing (resident, non-resident)
Senior citizen fishing (resident)
Husband/wife fishing (resident, non-resident)
7-day fishing (non-resident)
3-day fishing (non-resident)