Sparks............here's a few to get you going.............
1. A cache of gold coins is supposed to be buried on a farm between Emmans & Macungie. Several people have searched the farm which is called "Haunted House". About 25 years ago, is was rumored the treasure had been found, but was learned to be a hoax. As far as can be determined, the money, hidden by the farmer, is still there.
2. South of Egypt was the site of Fort Deshler, built in 1760. Do some research and look for roadside historical markers to pinpoint the exact location.
3. East of Lynnport was Fort Everett was built in 1756. Troops were stationed there during the French & Indian war.
I have more leads for Lehigh County as soon as I find them, I'LL post them........Rich