Book excerpt: This guide shows you how three great land surveys can provide information on your ancestor's home as well as historical snapshots of your area. The tithe, Valuation Office and National Farm surveys were comparable to the Domesday Book in their coverage. Spanning the period 1836-1943, they provide abundant information on rural and urban localities; on dwellings, settlements and landscapes; and on individual householders and tenants, farmers and industrialists. The surveys are of value to family and local historians. This guide is your companion to researching these records. The text explains why and how the surveys were made, and shows you how to identify and interpret the records that will put your ancestors or neighbourhood 'on the map'.