I oredered the passport just before I took a trip to CT, RI and MA. They send you a list of the "Official" LH's that have stamps and where to get them. This even covers some that are not regularly open. You are directed to the local Coast Guard in some places. They are very liberal- they accept unofficial stamps, signatures and even small pictires pasted in the book. When you fill it the send you a patch and return your passport. I managed to see 31 LH's on my trip, but I've have not pasted my pictures in yet. I got several stamps and signatures, but most were not on the list or open to the public. Dennis