“Victory Garden Plots Free For Employees ca. 1942 – ca. 1943” poster, created by the Office of Emergency Management, War Production Board, via U.S. National Archives Commons on flicker.
The location is Brierly’s Lane near the intersection with Duquesne Road (Bull Run Road). I think this is in Munhall, Pennsylvania, a suburb of Pittsburgh.
enclos*ure 
Welcome back. I have an interest in Victory Gardens, such an interesting aspect of our history. This is a neat post.
Thank you! There are some nice Washington, D.C., Victory Garden photos by Louise Rosskam here: https://enclosuretakerefuge.com/2012/02/02/victory-gardens/
Congratulations on five years of blogging!