A Susquehanna Valley man made an interesting discovery at Fowlers Hollow State Park in Perry County.When Joe Frassetta spotted a bottle on the ground, he assumed it was trash."I'm thinking, well, people don't usually write on their trash, so maybe there's something here," he said.Frassetta and his wife, Marci Mowery, carefully pulled out the faded pieces of paper inside."The date on this card is 8/31/1973," Frassetta said.One was a 50-year-old campground receipt for $6 written to Bernard Moore, of York.The other was a paper plate."Four different people wrote about their experience in the park," Frassetta said.According to the message, the Moore family stayed in campsite No. 11. They also added that the neighbors that weekend were a little loud.Related video below: Pa. getting new state parks."It brought back memories for me of my camping in a state park," Mowery said.Frassetta and Mowery shared their find on social media."We got all these stories about people who were maybe engaged while visiting a state park or had their wedding in a state park or fell in love in a state park," Mowery said.Related video below: Camping at Gifford Pinchot State Park.There's still one story they'd like to know more about."Hopefully we can connect up with the family that left this message and return it to them. That would be awesome," Frassetta said.If you think you know the Moore family who may have left the note in 1973, you can call News 8 at 800-TIP-WGAL (800-847-9425) or email news8@wgal.com.Related video below: Explore Swatara State Park.