19th-20th century
sight: 27.3 x 18.8 cm (10 3/4 x 7 3/8 in.) framed: 48.9 x 41.2 x 2.2 cm (19 1/4 x 16 1/4 x 7/8 in.)
Bequest of the artist to the Fogg Art Museum, 1936.
Invisible physical energy on white wove paper. [The actual drawing is a blank sheet of wove paper placed into a handmade glassine envelope which is itself placed into a handmade white wove paper envelope which is then placed into a handmade brown card folder. There is also another handmade glassine envelope which contains a white printed card. The text on the latter reads: "A Couple of Wet Rocks/(invisible drawing/energy)"]
20th centurySwissBlack marker and adhesive on paper
20th centuryGermanInk on paper
ChineseGraphite on off-white wove paper
20th centuryAmericanGraphite on paper
20th centuryGermanGraphite on cream wove paper
20th centuryAmericanColored marker on paper
20th centuryGermanGraphite on paper
20th centuryGermanColored marker on paper
Graphite and colored pencil on paper
20th centuryGermanGraphite and black chalk on buff laid paper
20th centuryAmericanGraphite with white chalk accents on tracing paper, backed
19th centuryFrench