Have you tried contacting any Historical Societies for info?Frost is a local name.Try writing to John Dudley A-CHS with what info you have on Corbett,Frost,etc. one of the contributors to the Hist. Soc.as a researcher is a Frost.
Write John at: 216 Pokey Road, Alexander,Me 04694
He is a wealth of knowledge.Ask him to mail you a copy of family files they have and Pliney Frost's address.You may want to ask Agnes to have her sister take photos of the graves for you and reimburse her for the cost.I have the 2 Princeton Cemetery record books if you need anything from them.E-mail me @ Veggiepal2@yahoo.com
You are on a true odessy.Have fun, Maria.