zecritr is right, acl's are a good bet. You might find some milks though........ marbles are a possibility, too. Late throws might get you some canning jars or candy containers. Older liscense plates could be in there. Maybe there's something older in a deeper spot. Anyway, good luck! Post some pics.
Not usually but some are worth a few bucks. Pre prohibition bottles are more desireable generally. If you don't know the approximate values of the bottles you're finding then I would suggest that you bring them home, look them up on E bay, Google, or post pics here for some honest opinions. Bottle books with values are available too but many of them are not exactly what you would call accurate because of many variations such as market demand, condition, economics, the authors expertise, etc. However some books are quite well written and are excellent references but pricing is always prone to fluctuations. Think in terms of a value range rather than a fixed value.
Now let's see some pics and we can chime in. By the way, where are you located? Quite a few diggers from Maine here.
hi, by rights 60s bottles are still a littel to recent,for most collector, of antique bottles,thats not to say,that a good bottle no mater what age isnt worth collecting. Dickel horn wiskys J D commemorative,,,,,,,,,,,,,,,ect. you may find toys in that stuff,thu i find 50s and 60s dummp to reacked up to find anything in one pice,hay,good luck.