The first book Some Records of Old Hunterdon Co. was published in 1978. So the copyright would still be in force. The Historical Society would need permission from the original publisher, Trenton Printing Co. Mrs. D'Autrechy is now deceased, but I suspect the Hunterdon Co. Historical Society could obtain the permission and re-publish if there was enough interest. I have both books and have found them very valuable. I use them often.