Sue Perks analyzes the various symbols that have stood for "poison" or "danger" and proves that in communication design context is everything.

As part of a broad promotional push for the Symbol Sourcebook, Henry Dreyfuss worked with Neiman Marcus to produce a bold selection of merchandise related to symbols.

Paul Clifton, project manager of the Symbol Sourcebook, compiled a chronology documenting key moments in the development of the project.

Sue Perks interviews Pam Holaday, member of the Symbol Sourcebook team who draw the majority of the symbols.

Sue Perks explains the structure of the Symbol Sourcebook, along with Henry Dreyfuss's thinking behind much of the book's content.

Looking at archival correspondence, Sue Perks charts the wide-reaching, collaborative process Henry Dreyfuss and his team undertook to create the Symbol Sourcebook.