In the late 1800's there were several families residing in and around Roseberry. By the spring of 1905, the town of Roseberry was growing, complete with a hotel, two black smith shops, two stores, a restaurant, butcher shop, logging mill, and a creamery destined to be the largest in Long Valley.

Valley County was established on February 26, 1917 with its county seat in Cascade. Named for the outstanding topographical feature of the area, Long Valley. Fur trappers were the first men of European descent in the area, but permanent settlement did not take place until the 1880s when livestock ranchers moved into Long Valley. With the completion of the Cascade Dam in 1948, a large swath of the southern part of the valley was covered by Lake Cascade. The population was 9,862 at the 2010 census. The county seat is Cascade, and the largest city is McCall.

The Valley County History Project is a nonprofit group of volunteer writers and historians compiling, writing and publishing books on the history of Valley County in a collaborative effort.

Their mission is to learn about and preserve the wealth of our local history and to be supportive in making this information available to those seeking to learn more about the people and events that have shaped Valley County. Publications of the Valley County History Project and many other books are available in the Valley County Museum at Roseberry.

For more information, please contact valleycountyhistoryproject@gmail.com or PO Box 133, Donnelly, Idaho 83615.