The posted coordinates take you to a memorial for a Revolutionary War Patriot. This woman provided essential support to the Continental Army during the war. Her story, along with the stories of many other female contributors to the cause, can be discovered here: Jersey Girls.
You WILL have to visit the posted cords in order to complete the information needed to pass the checker, so be forewarned.
Ok. Now for the puzzle. Once you have completed the associated Lab caches, use this code and enter it into Certitudes. Use the numbers and letters in the order I asked the questions. One long string of numbers and letters....no spaces in between.
Dunk's Ferry - Digital root of your answer
Peacock Cemetery - Use your number
Iron Works Hill - Digital root of your answer
Petticoat Bridge - Digital root of your answer
Joseph Bloomfield - First letter of the name you answered
Finally, at the posted cords, use the three initials of the American Patriot's name.
Ok. You should have a string of four numbers and four letters. Put that code into the checker to receive your final coordinates.
You can validate your puzzle solution with certitude.