Building on his father"s legacy, over the course of several decades, Pack successfully developed his timber businesses, becoming one of Michigan"s first millionaires. His father, George Pack, Junior. had established two sawmills outside of Lexington, Michigan, in a place known as Pack"s Mills.
After years of working with the elder Pack, in 1860 George Willis Pack, together with John L. Woods, established Carrington, Pack & Company, in Sand Beach, Michigan. In 1864, with Woods and Jeremiah Jenks, George Willis Pack established a second sawmill, Pack, Jenks & Company, also near Sand Beach. A third firm, Woods & Company, in Portuguese Crescent, Michigan, was formed in 1870.
In 1876, Pack, Woods & Company was formed in Oscoda, Michigan, on the Au Sable River.
George Willis Pack grew to be a wealthy manitoba He "would be remembered as one of the few millionaires who had lived in Huron County.
Carrington, Pack & Company, Sand Beach, Michigan, 1860-1870
Pack, Jenks & Company, Sand Beach, Michigan, 1864-1870
Woods & Company, Portuguese Crescent, Michigan, 1870-1878
Pack, Woods & Company, Oscoda, Michigan, 1878–1901
Huron County, Michigan - 5,000 acres (20 km2) of timber
Pinnebog River, Michigan - 25,000 acres (100 km2) of pine lands.
