William George Mitchell (b1925) is an English sculptor, artist and designer. He is best known for his large scale concrete murals and public works of art from the 1960s and 1970s. His work is often of an abstract or stylised nature with its roots in the traditions of craft and "buildability". His use of heavily modelled surfaces created a distinctive language for his predominantly concrete and glass reinforced concrete (GRC) sculptures. After long years of neglect, many of William Mitchell’s remaining works in the United Kingdom are now being recognised for their artistic merit and contemporary historic value, and have been granted protective, listed status.

• http://en.wikipedia.org/wiki/William Mitchell (sculptor)
• http://www.waymarking.com/waymarks/WM7YC7_Abstract_Geometrical_Shapes_San_Francisco_CA