There is some states, I think maybe Pennsyvania, that at one point i belive had a law that you had to kill a doe before you could kill a buck.
It was New Jersey that had Earn-a-Buck. In PA, we protected our doe until about 10-12 years ago. We never had an earn-a-buck, but we have a ton of doe hunting opportunities now. Mostly in archery, but some WMUs have a 2 week rifle season for doe and some WMUs have a 1 week season. We also have a 1 week ML season for doe-only in October.
Before that, we had a 3 day doe season (mon, tues, wed) and doe licenses were issued on a draw and were limited. There were 12-15 guys at our club who applied every year and 2-5 of them would get a doe license each year.