Boaters at Lock 3 on the Kentucky River, United States, 1950s, scanned from a red border Kodachrome original transparency.
The Kentucky River and its series of locks are an engineering marvel, facilitating steam boat trade way back when, but now largely used for water conservation. Back in the 1950s, it was a major boating destination, as this image details. Love the Bunny.
Slide is marked: Looking into Lock #3 / On the Wall / July 25, 1953
Image is 6304 pixels in width, scanned at 4800dpi. Image copyright Jim Bunte.