Titled on chart: LIBRA
Right side margin; No. CVII. GUIDE TO KNOWLEDGE. PRICEONE PENNY.
Verso printer's imprint; Printed by R. Clay, 7, Bread-street hill, Cheapside.
Wood engraved map by Joshua Archer (1792?-1863) published in weekly parts in The Guide to Knowledge edited by W Pinnock...London: W.Edwards 1833-34.
The unusual printing method whereby the engraved woodblock was inked with a roller without working the ink into the engraved cuts resulting in a white line on a black ground, was a technique suited to celestial charts where stars appear bright against the black background.
William Pinnock (1782-1843) British publisher and educational writer, started as a schoolmaster and bookseller, and from 1817, in partnership with Samuel Maunder in London, began publishing inexpensive educational works.
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