In 1865, McCarthy built a dock nearby, and the protected harbor of Glen Haven began to be used as a stop.

In 1878, Philo Chamberlain, president of the Northern Transit Company steamship line, acquired the inn and the rest of the properties in Glen Haven to assure an adequate wooding stop for the company's vessels.

In the meantime, he purchased the village of Glen Haven from Chamberlain, including the Inn, and opened a general store nearby.

The National Park Service purchased the properties in Glen Haven in the mid-1970s, and used the inn as a dormitory for a time.

[2] A rear addition was constructed later, as was an enclosed porch on the north and east sides.