Westerlund, a Swedish immigrant, who back in Sweden had worked as a cabinet-maker, took on the task of hollowing out one particularly robust (22-foot-diameter) cedar-tree stump, and Gustav finished up by putting a roof, window, and door on the stump house. A stovepipe through that roof hints at the woodstove inside that kept the family warm for a few months until a conventional house was built nearby. Even after they moved into that new home, Westerlund maintained his quarters in the stump as he liked the independence and privacy it provided.
A newspaper visited the house in 1901:
"Inside it is one good-sized room, which is boarded up and neatly papered and made as comfortable as any apartment could possibly be made. The walls inside slant inward at the top, which gives one the impression rather that it is an upstairs room, otherwise it is not different from any other room."