Before the 1870s, architectural and technical drawing copies were produced by hand using translucent tracing paper or drafting cloth. Blueprinting was introduced to North American architectural and engineering professions in the mid-1870s and quickly gained popularity.
1. opera54 - acrylic on canvas, painted with fingers 2. quest non e bello ( this is not good ) --- acrylic on canvas, painted with fingers 3. azioni - acrylic on canvas, painted with fingers
