Old Number Six Book Depot

Put some Clif bars in your pockets, clear your afternoon, and bring your favorite person: if you’re already looking for a bookstore, you’re about to find your new favorite place on earth, and no amount of time there will be enough, and no one will believe your tales of this Shangri-​la.
Go, go often, and go with categories in mind, not a specific book.
Some books are expensive, but they are for a reason: the forty dollar book you are holding is rare and special. The four dollar book next to it? Just as special; be prepared for both.
There is nothing else like it. I squirrel away money when I know I will be visiting New Hampshire, just to have a book budget for when I visit.

Stopped here on a whim on our way back from the White Mountains. It was a little out of the way so I wasn’t sure but I’m so glad we did! Another reviewer wasn’t exaggerating when they called this a «mecca.» Just imagine a labyrinth of floor-​to-​ceiling old dusty books, just asking to be dug through. And then realizing there is a whole second floor that also needs exploring!
Very friendly staff, helped me find a section of books that would have otherwise taken me (literally) hours to find. I will definitely be back, and this might be a new regular part of my white mountain trips. HIGHLY recommend
One caveat:
It’s a bit tricky to find, and except for the sign by the road you would never know this white house is a bookstore. Park in the driveway and store entry is located at the back end of the driveway.

Biggest book store in NH you’ve never heard of. Incredible history selection. You’d never know how huge it is from the street– like the Lion the Witch and the Wardrobe, one enters the wardrobe and it keeps going and going and going. Right now having a sale 40% off everything. They also own Northwood books

An absolute mecca, perhaps the king (queen?) of New England used book stores. Tons of book about everything — and «everything» includes some fairly esoteric academic subjects. Finer-​grained that your typical college major — for instance, sections for different types of business, not just «Business» or «Economics».
The setting is pure New England — up the hill from downtown Henniker, which even has a college. Wish I could have recommend a lunch spot, but have never stopped in town. Next time…
Inside, you’ll wind your way through an old farmhouse. Sometimes the books fill cul-​de-​sac rooms; sometimes they’re on shelves erected in larger rooms, and sometimes they just line the hallways. Be sure to do some exploring as it’s easy to miss large chunks of the house. In particular, the upstairs has a great selection of US state/​region-​specific books.
The owners share responsibility for this shop and Northwood Used Books, which they also own. Nice folks. Pick up a flyer for the NH Used Booksellers Guild — some of the shops are small or rarely open, but others are worth a visit.

Old Number Six Book Depot is, simply put, one of the best used bookstores in the country. Located atop a hill above picturesque Henniker (the only one of its kind), this small town treasure has over 160,000 volumes to boast of. The owners are knowledgeable and almost always willing to add to their collection, so it’s hard to think of a better bargain bookwise in New Hampshire.