Artifact Details Title ACM button Catalog Number 102687963 Type Physical object Description ACM button consists of circular orange button with blue text, "Stamp out / T.O., * / JOIN / ACM! / *Technical Obsolescence". The graphic depicts a man on his knees being stepped on. There is a horizontal mark on the lower middle of the back. Manufacturer Association for Computing Machinery (ACM) Dimensions overall: 1/4 in x 2 in x 2 in Category Ephemera/Button