She went silently up to him and brought her head against his side with a friendly thwack.

Pencil on board

40.6 cm - 50.8 cm (15.98 in - 20 in)

Estimated price : $600 - $900

Swann Galleries - New York,Jan 27, 2016

The Albino Hawk.

Mixed Media on paper

28.5 cm - 28.5 cm (11.22 in - 11.22 in)

Estimated price : $500 - $750

Sold for: Signedin to unlock

Swann Galleries - New York,Jan 27, 2016

Jackson Hole

Oil on canvas

18 cm - 23 cm (7.09 in - 9.06 in)

Estimated price : -

Sold for: Signedin to unlock

Heritage Auctions - Texas, Dallas,Feb 20, 2015

Lagoon

Watercolor

57.2 cm - 24.8 cm (22.52 in - 9.76 in)

Estimated price : $1,200 - $1,800

Sold for: Signedin to unlock

Swann Galleries - New York,Jan 21, 2015

FROM MAN EATERS

Lithograph

12.5 cm - 9.5 cm (4.92 in - 3.74 in)

Estimated price : $200 - $300

Sold for: Signedin to unlock

William J. Jenack Auctioneers - Chester, New York,May 17, 2014

The next instant under a powerful impulse of his wings the owl was gone

Charcoal

76.2 cm - 55.5 cm (30 in - 21.85 in)

Estimated price : $600 - $900

Sold for: Signedin to unlock

Swann Galleries - New York,Jan 22, 2014

Halloween Jack-o-Lantern with Cat

Crayon pencil, ink, and watercolor

45.7 cm - 43.2 cm (17.99 in - 17.01 in)

Estimated price : $800 - $1,200

Swann Galleries - New York,Jan 23, 2013

All Round Protection."

Crayon and pencil

16 cm - 35.5 cm (6.3 in - 13.98 in)

Estimated price : $1,000 - $1,500

Sold for: Signedin to unlock

Swann Galleries - New York,Jan 23, 2013