Ordnance Survey One-Inch First Edition Old Map of Hertfordshire, Buckinghamshire, Middlesex, Berkshire: Old Series map of .
Please note that the modern reference map on the split screen is intended as a guide only.
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This sheet represents a landscape, characterised by .
The primary archaeological theme is .
The terrain is interpreted using .
Sheet XLVI is visible in the upper-right margin. Large county lettering supports Hertfordshire across the upper sheet and Buckinghamshire in the lower-left. Dense settlement in the lower-right corresponds to the north-western London / Middlesex sector. Graticule labels are faint or unreadable, so bounds are reconstructed from adjacent Sheet 45 and OS Old Series sheet geometry.
Sheet 46 shows a mixed area of . The map is useful for studying early 19th Century historic settlement patterns, Roman road alignments, early archaeological site indentification, how roads, old tracks, lanes and paths, villages, waterways and field systems related to the wider nineteenth-century landscape.