Happy Hollow Park still sits tucked away in Wyomissing, though the pool is no longer in existence. Happy Hollow was built with funds from Janssen and Thun, prominent owners of the Berkshire Knitting Mill back in the early 1900s. They built up most of Wyomissing, as a place that was family-friendly for their workers who worked in their textile factories along Penn Ave. The video below goes into detail about the history of their company and how Wyomissing would not have been the community it is today without it.
Below you can see a 1937 Aerial shot of the Happy Hollow Park. The pool was not on the current park grounds, but an adjacent block to the east, at Trent and Wayne Avenues. Houses currently stand in it’s place. Could not find info on when it opened or closed. If you remember please leave a comment.