Gladys Noble Wagner was active/lived in Pennsylvania. Gladys Wagner is known for modernist-leaning landscape, sculpture.
Biography Gladys Wagner
From Cheltenham, Pennsylvania, Gladys Wagner was a landscape painter and sculptor whose preferred medium was stainless steel. She was co-founder and director of the Cheltenham School of Fine Arts and also taught art and philosophy in other schools in the Cheltenham area.
Source: Peter Falk, Who Was Who in American Art