A continuing series of multiples in different sizes and shapes designed for use in expressing gratitude

Visible Markers (in six different colors), 1997. Cast pigmented concrete, 2 x 8 x 2 in. (5.08 x 20.32 x 5.08 cm.) each
Pubished by I.C. Editions, New York

Visible Marker (Drawings), 1998. Pencil on rag paper, 5" x 7" each

Visible Markers in Twelve Exciting Colors, 2000. Tufcal painted with oil-based enamel
4 x 4 x 1.75 in. (10.16 x 10.16 x 4.44 cm.) each. Signed; and dated in black felt pen on underside of each.
Published by I.C. Editions, New York

Visible Markers - Danke, 2000. Medium: cast white polyurethane multiples. Size: 8 x 4 x 1.5 cm. (3.1 x 1.6 x 0.6 in.)
Multiple produced for Texte zur Kunst fundraising, 150 sets of 5 pieces each

Visible Markers, 2002. Synthetic resin. Length, each: 1-3/4 in. (9.4 cm.).
From the Bozart Artist Project Series

Visible Markers, 2012. A series of functional Visible Marker sculptures fabricated in reinforced fiberglass resin, suitable for seating inside or outdoors.
Produced in sets of three, each set an edition of 10. 16.5 inches high x 24 inches in diameter each.
Published by Carl Solway Gallery, Cincinatti, Ohio

Visible Markers, 2019. An unlimited edition of Visible Markers cast in resin," 3" x 4.25" x 1" each.
Produced in three colors, blue, yellow, and red.
Published by the Museum of Modern Art, New York.