The title page of the 1930 Real Estate Plat-Book of the City of Trenton and Borough of Princeton, Mercer County, New Jersey contains information about the publisher and the geographic scope of the maps contained within the book. In addition to the title page, there are 58 pages including several indices - a Trenton map index delineating the sections depicted on each plate, a street index, an index to the Trenton City Atlas Page (CAP) numbers, a zoning map, and an index to the 6 Princeton Borough plates.