The Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers, par une Société de Gens de lettres

Skeleton from The Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers, par une Société de Gens de lettres by Denis Diderot and Jean le Rond d'Alembert. These plates are engraved by J.A.Defehrt and Bonaventure/Benoit-Louis Prevost after J.R Lucotte or Goussier. Another post about the Dictionary.And one more.

Ink Wash and Pencil Figures

Ink wash and pencil drawings.

See the drawings on Ebay, and here.

Expressive Figure Drawing: New Materials, Concepts, and Techniques

Drawing From Life; Charcoal, Ink, Pencil and Wash Drawings

Guy Colwell

Guy Colwell, comic book artist, did this nude study in 1963. See the drawing on Ebay.

Doll

Central body: The art of Guy Colwell, including work from the years 1964 to 1991

Inner City Romance by Guy Colwell. See it on Ebay.

Another figure by Guy Colwell auctioned at Heritage Auctions

Heritage Aucions

Also at Heritage Auctions

Skeleton by John Linnell

Skeleton drawing attributed to John Linnell, British portrait and landscape artist.
Here are some portraits by John Linnell at the Auckland Art Gallery.

He engraved plates for Varley's work in which he tried to combine astrology and physiognomy.
An example can be seen at the E.J.Pratt Library, Victoria University Toronto.

More skeletons at this post. Also How to Draw a Skeleton - Bilderbuch fur Kinder. The Human Skeleton and Muscles - Johann Georg Heck. And Skeletons for Halloween. And Histoire Naturelle des Mammifères. And The Human Skeleton.

Portrait John Linnell Artist Old Print 1882 Antique Art

Paintings from the Reign of Victoria: The Royal Holloway Collection, London

French Prints of Classical Statuary

 Apollo, Leda

See the drawings on Ebay.

Venus Victorious over Mars

All from an unknown French Volume about Classical Sculptures.

Sculpture Prints at Amazon

DONALD HARCOURT DE LUE

Drawings by Donald Harcourt de Lue. See the drawings on Ebay. He is known for his representational sculptures.
More images at Heritage Auctions another lot at Heritage Auctions.

The Sculpture of Donald Delue: Gods, Prophets, and Heroes Donald De Lue Donald De Lue (Author), National Sculpture Society (Author)

American Arts Quarterly: Learning From Old Master Drawings; Value, Meaning and the Economic Crisis; the Worldly Painters of Venice; Donald De Lue Tradionalist in a Time of Abstraction; (Vol. 26 No. 2 Spring 2009)

Two more images at Burchard Galleries.

MICHEL NITOT (1759-1821)

Michel Nitot was an engraver who worked for the English artist John Flaxman

See the drawings on Ebay.

More at Galerie Amicorum, and Piasa

Flaxman's Illustrations for Dante's Divine Comedy (Dover Books on Fine Art)

Sir William Orpen

The model by Sir William Orpen

Summer Afternoon (Artist in his Studio with a Model) about 1913

Sir William Orpen book at Amazon.com

The Outline of Art: Second Volume by Sir William Orpen