All Draughtsmen's Assistant, Or, Drawing Made Easy : Wherein The Principles Of That Art Are Rendered Familiar In Ten Instructive Lessons ... Explain'd by a great Variety of Examples from the most approved Designs, on Copper-plates, neatly engraved: With a suitable Introduction on the Utility of this Noble Art; And Observations on Design, as well in regard to Theory as Practise (Sayer and Bennett, 1777)
Lt. BL wird das Werk Carington Bowles zugeschrieben. - Erscheinungsjahr geschätzt: Tafeln datiert zw. 1763 u. 1776; Partnerschaft der Verleger Robert Sayer und John Bennett ca. 1777 - 1785 (lt. WBIS in: Fisher, Susanna: The makers of the blueback charts. 2001)