The Bonneville Power Administration Library has released a new collection of six BPA-produced films from the 1930s, ’40s and ’50s that takes viewers on a cinematic journey into the early years of the Northwest hydroelectric power and transmission systems.

The DVD set, titled “BPA Film Collection Volume 1, 1939-1954,” is the first compilation of films from the agency’s archives ever made available. And it has received a warm reception.