Walker's Essex
The Atlas was first published in 1837 (Essex is dated 1835), and then several times to 1871 (or later), as Hobson's Fox Hunting Atlas (1850 to 1880), as Walker's Fox Hunting Atlas (up to 1895) and as Lett's Popular Atlas (1884 & 87). This example is an 1847 map, with later annotations.
Hundreds referenced to a table, plus listing parliamentary boroughs, places of election and polling places. Hundreds colour washed, plus Colchester, Harwich & Maldon Boroughs all blue-lined. Six Polling Places in North, 7 in the South. Divisions uncoloured, with a pale, broad colour for the boundary. Major roads have a thicker line on one side but all roads uncoloured.
Compass rose still in Herts.
Scale correct at 1+12 miles = 82.5mm, or 4.0 miles/inch, ie 1:250,000.
Railways have quad lines with red overlay for West Ham to Plaistow (authorised 18445; opened 1846), for Marks Tey to Sudbury (1846; 1849) and from Chapel to Halstead (1856; 1860). Red lines with no underlying black lines for Braintree to Witham to Maldon (1846; 1848), for Manningtree to Harwich (1847; 1854), for Halstead to Gt Yeldham (1859; 1862), for Stratford to Loughton (1853; 1856), Forest Gate to Tilbury to Mucking (1852; 1854) and on to Pitsea (opened 1855) and Southend (1856), plus the Mucking to Thameshaven spur (1852; 1855). There is also Barking via Stepney to Fenchurch Street (1856; 1858), the lines from Stratford le Bow to Stepney (1845; 1849) and from Stratford & Stratford le Bow across north London (1850), and Stratford to North Woolwich (1845; 1847). The North Kent line is also shown by a red line only (1837; 1849). Black quad lines (with no red) for north Colchester to Hythe (1846; 1847), and for the Grosvenor House-Red House & Ilford-Red House, plus Red House to Epping (missing Loughton) lines - all authorised 1846, but never built. The faint pecked black line from Romford to Thames Haven Docks has no red overlay.
"By J & C Walker" under the cartouche, but along bottom "Published by Longman, Orme, Rees & Co, Paternoster Row, London." This is undated - until 1846 they were dated. From the the red lines (eg line to Gt Yeldham), I estimate its selling date as being c.1862.