lower left verso in graphite: Oliveira: Torso I OKTP; lower right verso in graphite: OKTP N. Oliveira 04 / A+ / RED / NEL / POS
Acquired by NGA from Kathan Brown, San Francisco, 2006.
- Yes, No, Maybe: Artists Working at Crown Point Press, National Gallery of Art, Washington, D.C., 1 Sep 2013 - 5 Jan 2014.
- Brodie, Judith, and Adam Greenhalgh. Yes, No, Maybe: Artists Working at Crown Point Press. Washington, DC: National Gallery of Art, 2013, p. 117, pl. 26.2.