Two (2) pencil-signed works on paper by John Edward Costigan and Adolf Arthur Dehn. 1st item: John Edward Costigan (Rhode Island/New York, 1888-1972) etching on paper titled "Workers in the Field", published by Associated American Artists, New York. Great Depression era scene depicting a family in a desolate field, foreground, a worker and a horse, left middle ground with a farmhouse and a plain in the background. Signed "J. E. Costigan" lower left in the plate, signed "J. E. Costigan N. M. - S. M. E." in pencil, lower right margin. Includes original brown paper frame backing with artist's label indicating that this image was the winner of the 1934 Shaw Prize. Retains original mat. Plate - 8 1/2" H x 12 7/8" W. Sight - 9" H x 13 1/8" W. Mat - 14 5/8" H x 18 3/4" W. 2nd item: Adolf Arthur Dehn (New York/Minnesota, 1895-1968) limited edition lithograph on paper titled "Threshing", published by Associated American Artists, New York. Landscape scene depicting cattle and chickens in an enclosed pen to the right of two buildings, foreground, several men participating in the threshing process, middle ground, a line of trees below a cloudy sky, background. Signed "Adolph Dehn" in pencil, lower right under image. Includes original brown paper frame backing with artist's label. Retains original mat. Sight - 9 3/4" H x 12 7/8" W. Mat - 15" H x 18 1/8" W. Both items American, second quarter 20th century.