If you're visiting Hatchet Pond and want to pick up a copy of either On The Banks Of Hatchet Pond or Podge Goes Splodge At Hatchet Pond then the nearest place to buy them is Norris Gifts & Furnishings in Beaulieu, a very short drive (or bike ride) away. 

Norris Gifts & Furnishings can be found half-way up Beaulieu High Street, directly opposite the path to the main car park. It's a superb shop full of beautiful gifts and items for your home, so well worth a visit if you're in the area.