I love the random things I sometimes find from online archives, usually via Google alerts. This one is from the Getty Research Institute: Rosa Bonheur Sketchbook, 1847

• Title:
  Rosa Bonheur sketchbook, 1847.
• Author/Creator: Bonheur, Rosa, 1822-1899.
• Creation Date:
  1847.
• Physical Desc.:
  1 sketchbook
• Summary:
  The sketchbook contains studies of plants, peasants, farm tools, decorative objects, landscapes and human figures and is extensively annotated.
• Language:
  French
• Notes:
  Sketches (pencil, ink and wash).
• Form/Genre:
  Sketchbooks–France–19th century.
• Subjects: Women artists. Artists’ preparatory studies. Painting, French–19th century.

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Read more about the artist: Rosa Bonheur Wikipedia entry