The Pilgrim of the Cross at the End of His Journey (study for series, The Cross and the World) Thomas Cole, 1840
Blue Jays in Winter, study for book Concealing Coloration in the Animal Kingdom Abbott Handerson Thayer, 1900
The Pilgrim of the World at the End of His Journey (study for the series, The Cross and the World) Thomas Cole, 1840
Lunar Caterpillar, study for book Concealing Coloration in the Animal Kingdom Abbott Handerson Thayer, 1920
Oligocentra Lignicolor, Walker, study for book Concealing Coloration in the Animal Kingdom Abbott Handerson Thayer
The Progress of Civilization: Hunting, Herding, Agriculture (mural study, State Capitol, Des Moines, Iowa) Kenyon Cox, 1900
Heterocampa Biundata, Walker, study for book Concealing Coloration in the Animal Kingdom Abbott Handerson Thayer, 1920
Study for Mural for Appellate Court Building, New York; "Statute Law", Helmet for Figure of "Force" Kenyon Cox, 1890
Crumpled Leaf Caterpillar, study for book Concealing Coloration in the Animal Kingdom Emma Beach Thayer
Curled Dead Leaf Mimicking Sphinx Caterpillar, study for book Concealing Coloration in the Animal Kingdom Gerald H. Thayer, 1920
Study for Mural at U.S. Custom House, Cleveland, OH, "Passing Commerce Pays Tribute to the Port of Cleveland" Kenyon Cox, 1900