# Why He Cannot Sleep

- By: Thomas Nast (American, born Germany, 1840 - 1902)
- Date: 1866
- Medium: wood engraving in black on newsprint
- Classification: Print
- Dimensions: image: 35.24 × 23.5 cm (13 7/8 × 9 1/4 in.) ; sheet: 40.64 × 28.58 cm (16 × 11 1/4 in.)
- Credit line: Donald and Nancy deLaski Fund
- Museum: [National Gallery of Art](https://www.nga.gov/collection/art-object-page.159708.html)
- Rights: [Public domain (NGA Open Access, CC0)](https://creativecommons.org/publicdomain/zero/1.0/)
- Picture: https://invisiblenetwork.ai/thumbs/nga/ff5f6e81-eedd-49b2-ad8e-613af102bf3b/full/!1920,1080/0/default.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)