The firm of Tallis & Company flourished from 1835 to 1860 with varying imprints. Their illustrated Atlas of 1850-51 was one of the last decorative atlases, all the maps being engraved on steel and all adorned with small vignettes. 
This map was published by Tallis in 1851 drawn and engraved by J Rapkin with the illustrations by H  Warren, a fine map. (Ref Tooley 1979 p 154)

Condition Report
Paper thickness and quality: - Heavy and stable
Paper color: - white
Age of map color: - Early
Colors used: - Yellow, green, blue, red
General color appearance: - Authentic
Paper size: - 14 1/2in x 10 1/2in (365mm x 270mm)
Plate size: - 10n x 13 ½in; (340mm x 250mm)
Margins: - min. 1/2in (12mm)

Imperfections:
Margins: - None
Plate area: - None
Verso: - None

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