
“The AT&T Brand Center is one of the best identity sites around. A great example for a guided and expert download-manager. Additional every download comes with the Quick View Identity Guidelines PDF (With AT&T Artwork Naming Guide, etc.). Exemplary.” (Robert Salzmer)
You can browse and download all kind of material from AT&T, but only the ones inside Corporate Identity, other sections requires password.
Inside Corporate Identity you will find the resources organized in this sections AT&T Corporate Signatures, Signature standards, Media applications, Signature downloaders, Sub-branding device, AT&T/Olympic composite, History of AT&T Corporate Signature.
Source :
AT&T Brand Center