These are pages I worked on last year from old books of W.H.J. Boot, Eugène Chevreul, Faber Birren, Arthur Guptill, John Ruskin and one called ‘the sketcher’s manual’ by Frank Howard  which gives a few pointers on how to arrange  lights and darks in a composition. You can read them for free at Hathitrust.org or Archive.org DSC09223 DSC09224 DSC09225 DSC09226 DSC09227 DSC09228 DSC09229 DSC09230 DSC09232 DSC09233 DSC09235 DSC09236 DSC09237 DSC09238 DSC09239 DSC09240 DSC09241 DSC09242 DSC09243 DSC09244 DSC09245 DSC09246 DSC09247 DSC09248 DSC09249