# Sources of the pictures (Point at it and Decide tabs)

Six pictures from Wikimedia Commons, all **public domain**: two NASA photographs (works of the US federal government, Commons tag
`PD-USGov-NASA`) and four paintings whose authors died more than 100 years ago (public-domain mark or PD-Art on Commons). Each was
downloaded from the Commons thumbnail service at 1,280 px on the longest side (the Wanderer at 1,000 × 1,280) and saved as JPEG;
nothing else was changed. `thumbs/` holds the same files scaled to at most 360 × 240 px for the picker. The invoice and receipt scans in this
folder are our own renders (see the main README).

| file | work | author | date | licence (as stated on Commons) | Commons page |
|---|---|---|---|---|---|
| `pic_curiosity.jpg` | Curiosity rover self-portrait at Mont Mercou, Mars (PIA24543) | NASA/JPL-Caltech/MSSS | 2021-03-16 | Public domain (PD-USGov-NASA) | https://commons.wikimedia.org/wiki/File:PIA24543-MarsCuriosityRover-SelfPortrait-20210316.jpg |
| `pic_starry.jpg` | The Starry Night | Vincent van Gogh | 1889 | Public domain | https://commons.wikimedia.org/wiki/File:Van_Gogh_-_Starry_Night_-_Google_Art_Project.jpg |
| `pic_wave.jpg` | The Great Wave off Kanagawa | Katsushika Hokusai | circa 1830 to 1832 | Public domain | https://commons.wikimedia.org/wiki/File:Tsunami_by_hokusai_19th_century.jpg |
| `pic_earthrise.jpg` | Earthrise (AS08-14-2383), Apollo 8 | NASA | 1968-12-24 | Public domain (PD-USGov-NASA) | https://commons.wikimedia.org/wiki/File:NASA-Apollo8-Dec24-Earthrise.jpg |
| `pic_wanderer.jpg` | Wanderer above the Sea of Fog | Caspar David Friedrich | circa 1817 | Public domain | https://commons.wikimedia.org/wiki/File:Caspar_David_Friedrich_-_Wanderer_above_the_sea_of_fog.jpg |
| `pic_temeraire.jpg` | The Fighting Temeraire | J. M. W. Turner | 1839 | Public domain | https://commons.wikimedia.org/wiki/File:The_Fighting_Temeraire,_JMW_Turner,_National_Gallery.jpg |