The renaissance of etching

by Jenkins, Catherine, Orenstein, Nadine, Spira, Freyda
Published 2019

Northern European metalpoint drawings : technical examination and analysis

by Russell, Joanna, Russell, Joanna, Rayner, Judith, Bescoby, Jenny
Published 2017

Looking at drawings : a guide to technical terms

by Goldman, Paul, Goldman, Paul
Published 1979