Credits

General manager: Hannah Paquette
Database manager: Bart Stroinski
Writers: Karen O'Keefe, Awa Fijołek, David Grubb
Administration: Lisa Bakker

Designs of following authors have been used:
Luis Prado - "Silence" under Creative Commons – Attribution (CC BY 3.0)
Samuel Q. Green - "Letter" under Creative Commons – Attribution (CC BY 3.0)
Mourad Mokrane - "Phone" under Creative Commons – Attribution (CC BY 3.0)
Alexander Smith - "Person" under Creative Commons – Attribution (CC BY 3.0)
Austin Condiff - "Arrow" under Creative Commons – Attribution (CC BY 3.0)

Gang of the Coconuts -  "Free Country Flags" under Creative Commons Attribution-ShareAlike 3.0 Unported License
AIGA - "Symbol Signs"