A painting can be out of copyright and thephotograph of it can still be protected.

Design for the Tomb of Pope Julius II della Rovere

Michelangelo Buonarroti (d. 1564)

1505–6 · Pen and brown ink, brush and brown wash, over stylus ruling and leadpoint

Studies for the Libyan Sibyl (recto); Studies for the Libyan Sibyl and a small Sketch for a Seated Figure (verso)

Michelangelo Buonarroti (d. 1564)

ca. 1510–11 · Red chalk, with small accents of white chalk on the left shoulder of the figure in the main study (recto); soft black chalk, or less probably charcoal (verso)

The Head of the Virgin in Three-Quarter View Facing Right

Leonardo da Vinci (d. 1519)

1510–13 · Black chalk, charcoal, and red chalk, with some traces of white chalk (?); some remains of framing lines in pen and brown ink at upper right (not by Leonardo)

Standing Female Figure and Ornamental Framework

Girolamo Mazzola Bedoli (d. 1570)

ca. 1547–53 · Pen and brown ink, brush and brown wash, over traces of black chalk; squared in black chalk

The Virgin Protectress of the City of Siena

Francesco Vanni (d. 1610)

1588 · Pen and brown ink, brush and brown wash, over black chalk, on light brown paper

The Discovery of the True Cross

Bernardo Strozzi (d. 1644)

1599–1644 · Pen and brown ink, over leadpoint or black chalk; framing lines in pen and darker brown ink

Study for Angels Sealing the Foreheads of the Children of Israel in Saint Peter's Basilica

Pietro da Cortona (Pietro Berrettini) (d. 1669)

1652 · Black chalk, brush with brown and gray wash, highlighted with white gouache, on three sheets of brownish paper glued with overlapping joints

The Nymphaeum of the Villa di Papa Giulio, Rome

Hubert Robert (d. 1808)

ca. 1761 · Red chalk; framing lines in pen and brown ink

Door from the cabinet intérieur of Étienne-François, duc de Choiseul (1719-1785), at his château of Chanteloup

Unrecorded maker

ca. 1771 · Wood, carved, painted white and gilded

Branch of ivy (recto); Study of an urn for "Damocles" (verso)

Thomas Couture (d. 1879)

ca. 1866 · Black fabricated chalk and white chalk

Studies for Hercules Holding a Club Seen in Frontal View, Male Nude Unsheathing a Sword, and the Movements of Water (recto); Study for Hercules Holding a Club Seen in Rear View (verso)

Leonardo da Vinci (d. 1519)

ca. 1506–8 · Pen and brown ink; soft black chalk or charcoal (recto); soft black chalk or charcoal (verso)

Album containing drawings, prints, manuscript pages and newspaper clippings

Marcus Clayton Stone (d. 1921)

1850–80 · Watercolor, pen and ink, wood engraving, engraving, printed text