The IT community of users, programmers, vendors, etc have for decades had a reputation for being extensive consumers of coffee. In some parts of the IT ecosystem, especially among those who work odd hours, such as programmers, computer operators, and vendor field engineers.  I am studying the corporate ephemera of this industry and its cultural attachments, such as coffee cups and what they tell us about computing.  Do any of you have any information, ephemera, or sources and citations on this specific issue of coffee and computing?  I can get many industry folks, such as IBM retirees, to wax eloquently on the subject in their private FB accounts, but that is not enough.  Corporate culture is tough to study.  Thanks in advance for your help.  Jim