This workshop contains rows of tables topped with large stone slabs used for lithography. The image was drawn directly onto the stone slab. This workshop produced large posters long before they produced posters for the London Underground.
“Angel Falls; Loyalsock Trail” I created this monochromatic lithograph using an aluminum sheet and a grease pencil. I remember also using water and gum arabic. Water stuck to the gum arabic areas (negative spaces) and ink stuck to the grease areas.
For interesting facts and images on the history of poster design, check out: http://www.designhistory.org/posters.html