Hermann Gruber
Mail Art to Ruth Wolf-Rehfeldt and Robert Rehfeldt, 1981
sand collage on print as postcard with handwriting and stamps
10.5 × 15 cm (4 ⅛ × 5 ⅞ inches)
The Mail Art Archive of Ruth Wolf-Rehfeldt and Robert Rehfeldt
Hermann Gruber
Mail Art to Ruth Wolf-Rehfeldt and Robert Rehfeldt, 1981
sand collage on print as postcard with handwriting and stamps
10.5 × 15 cm (4 ⅛ × 5 ⅞ inches)
The Mail Art Archive of Ruth Wolf-Rehfeldt and Robert Rehfeldt