In the autumn of 1792, two brothers from Gorham, John and Nathan Carsley, built a camp and cleared land in Harrison. During the winter they returned to Gorham, coming back in March 1793 with their wives. Because John Carsley and his wife remained in Harrison when Nathan Carsley and his wife resumed living in Gorham until 1796, he is considered the town's first permanent settler. More pioneers arrived, living in log houses chinked with moss. The outlet of Crystal Lake into Long Lake provided water power for industry, and James Sampson erected at Harrison village the first sawmill and gristmill. Over the years other industries followed, including a wire-making business, blacksmithy, shingle mill, harness-maker, foundry, carriage maker, clothing maker and shoe shop. Scribner's Mill (now a museum) was built in 1847 on the Crooked River. On the Bear River, in 1867 the Harrison Water Power Company established the Bear River Woolen Mill, destroyed by fire in 1872.