Combined index shewing Civil Parishes and the Ordnance Survey maps of Hertfordshire on the 1 inch, 6 inch and 25 inch scales [and Petty Sessional Divisions]
Surveyed: 1863 to 1886, Revised: 1896 to 1897, Published: 1899 Size: sheet 53 x 47 cm (ca. 21 x 18 inches)