# Robert A. Millikan

- By: Samuel Johnson Woolf (12 Feb 1880 - 3 Dec 1948)
- Date: 1928
- Medium: Charcoal on paper
- Classification: Drawings
- Dimensions: Sheet: 40.8 x 35.8 cm (16 1/16 x 14 1/8")
- Credit line: National Portrait Gallery, Smithsonian Institution; gift of Mr. and Mrs. Stuart P. Feld
- Museum: [Smithsonian Institution](https://npg.si.edu/object/npg_NPG.2008.102)
- Rights: [CC0 (Smithsonian Open Access)](https://creativecommons.org/publicdomain/zero/1.0/)
- Picture: https://invisiblenetwork.ai/thumbs/web/c8900e93b403c9c19e7ac203018ccd33.jpg
- Who can see it: Tweens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)