Artifact Details Title Customer engineer code book Catalog Number 102783021 Type Physical Object Description The object is a leather-bound binder with a closing strap filled with various instructions and codes for IBM customer engineers. It is gold-stamped with "IBM CUSTOMER ENGINEERING" on the front cover and "THINK" on the back cover. Manufacturer International Business Machines (IBM) Dimensions overall: 1 in x 4 5/8 in x 8 in Category Ephemera/other Credit Gift of Dennis Monticelli Lot Number X8663.2018