Photos of the construction of the experimental Smith-Putnam Wind Turbine, built during the early 1940s. The first mega-watt sized wind turbine “operated for 1,100 hours before a blade failed at a known weak point, which had not been reinforced due to war-time material shortages. It would be the largest wind turbine ever built until 1979.” (Kiplinger’s Personal Finance, Jan. 1981 issue, pg. 24)

From the private collection of Carl Wilcox in the possession of Paul Gipe. More photos and information about the project is available at Wind-Works.org