Burn, Robert Scott · London : Ingram, Cooke, and Co. · leaf 129
120 ILLUSTRATED LONDON DRAWING-BOOK. both, the lines 1 1 are left-hand, and 2 2 right-hand isometrical lines, andare all put in by means of the ruler. … Wewithout
Drawing · Wood-engraving
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
