File:Old AT&T Logos.svg

https://vt.vtp-media.com/ecp/documents/product_Product/521/Logos/4546/att_gdl_glance.pdf

https://logoblink.com/wp-content/uploads/2008/11/att.pdf

http://www.beatriceco.com/bti/porticus/bell/pdf/att_brand_guidelines.pdf

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0ahUKEwitt-n84_LWAhXDWBoKHTToA0IQFggwMAI&url=https%3A%2F%2Fweb.opendrive.com%2Fapi%2Fv1%2Fdownload%2Ffile.json%2FOV8yMTIxOTEzN181aGNIbl8zNzU1%3Finline%3D0&usg=AOvVaw2bXBt0OYPRV4LNKgravEqW

http://perfectvoice.perfect-10.tv/pdf/2014_DIRECTV_BrandBookB.pdf