It might be a good idea to add a placeholder attribution, like "creator unknown" (ideally in a way that would allow you to gradually add attribution back as it becomes known).

I recognize several of these, and other can be found through their file names. I'd suggest to add a cell "attributionData", where file names can be associated with their creator / source data. That way others can suggest attributions.

This is a good idea, I added an attribution column to the csv. Will add another cell to map filenames to contributors... need to think of the best way to store this data so other folks can add to it besides endless forking.

- "!!bezier01.gif": https://dribbble.com/shots/1537700-B-zier-Curve - "!!spacesun_animated.gif": https://dribbble.com/shots/1685021-Spacesun-Animated - "!!spheretwist.gif": https://dribbble.com/shots/1679976-Twisting-circle - "!!tumblr_narqedjp4M1r2geqjo1_500.gif": https://dribbble.com/shots/1696376-Circle-wave - "!2014-05-allison-house-volumetric-drive-by.gif": https://dribbble.com/shots/1551852-Volumetric-Drive-by (Allison House) - "!2014-05-allisonhouse-moonlight.gif": https://dribbble.com/shots/1562458-Moonlight (Allison House) - "dribbble---digital-footprint.gif": https://dribbble.com/shots/1421734-Digital-Footprint - "!lavalamp_final.gif": https://dribbble.com/shots/1366246-Lava-lamp-gif These were all rather easy to find, so there's really no excuse ;)

Note that dribbble's gif player is utterly broken, but you can click the share arrow on each dribbble page to view the animation. Correction: "Allison House" should be "Devon Ko"