History and collections
HAT was established as an archive for material connected with British advertising. John Philip Jones's reference work Advertising Organizations and Publications includes an entry on the History of Advertising Trust Archive. The archive has also been used as a source for business and advertising history. In 2005, Stefan Schwarzkopf published an article in Business Archives on advertising-agency records and related material held by HAT. ==Ghostsigns Archive==
Ghostsigns Archive
In 2010, HAT launched the Ghostsigns Archive, a project documenting painted advertising signs on buildings in the United Kingdom. The Guardian reported that the project recorded more than 650 signs with contributions from photographers through the Ghostsigns Flickr group. A later Guardian article described the archive as containing about 600 examples from around the country. ==See also==