Let me know if you ever need a dive buddy and if you are anywhere near the Florida panhandle. I have a scoop on a fantastic dive site but plenty of snakes and gators around, water is also murky and a drought would be the safest time to dive it. But it will have some incredible mid 1800's bottles in it.
There is a good article in the latest antique bottles and glass collectors magazine about NH specific druggist bottles. a few you have are listed/photographed in that mag article..