Why are maps dated differently?
The date on maps relates to the publication date, not the date of the survey. If a map is made up of a number of maps the date specified relates to the earliest map shown. Please note in relation to 1:10 560 maps and larger scales that the date provided is relevant for all details on the map except for the following circumstances: Boundaries were occasionally altered after field revision but before publication on 1:10 560 maps prepared between circa 1896 and 1913. Before 1866, railways were sometimes added without acknowledgement to published 1:10 560 sheets.
