All of 'em
The following resources are the sources used in the project, from initial research to the documentation and visualization. Resources licensed under non-attribution (some CC), free licenses, and public domain works are not included.
Artur Shageyev, Bohdan Burmich, Alberto Miranda, dmarcodg, James Wilson, Edward Boatman, Rutmer Zijlstra, shimaru, Creative Stall, Kristin Phillips, Oliviu Stoian, Anthony Bossard, Oliviu Stoian, Oliviu Stoian, Chad Remsing, Miguel C Balandrano, Paul Smile, Maria Darron, Nastja Vivod, Creative Stall, Benjamin Bours, Elizabeth Smith, Elizabeth Smith, Tommy Lau, Eugene Reznik, sachan, joe pictos, Nick Bluth, Thomas Helbig, Lauren Manninen, Simple Icons, Chris Matthews, artworkbean, Austin Condiff, Universal Icons, Iain Hector, Mourad Mokrane, icon 54, artworkbean, Douglas Santos, matthew hall, GP, Iconathon, Gerald Wildmoser, Piero Borgo, Ilsur Aptukov, Yuvika Koul, Marco Olgio, Erin Standley, Cris Dobbins, frederick allen, Renato Forster, Rafael Empinotti, CLeF, Creative Stall, Iconathon, OCHA Visual Information Unit, Iconathon, John Chapman, Vicons Design, Rediffusion, Timur Carpeev, iconsmind.com, Anuar Zhumaev, Red Cross Red Crescent Climate Centre, Stephanie Wauters, Walter Fantucci, Jevgeni Striganov, Alessandro Suraci, Matthew Kennedy, Irit Barzily, Jens Tärning, Arthur Shlain, Luis Prado, Luis Prado, Hadi Davodpour, Hadi Davodpour, Agne Alesiute.