Artifact Details Title IBM reference summaries Catalog Number 102721968 Type Document Description Includes: GDDM programming OS/VS2 TSO Command Language SPF/CMS Structured Programming facility SQL/Data System FORTRAN interactive debug for CMS and TSO Date 1972-1985 Publisher International Business Machines (IBM) Category Manual Collection Title Douglas Merrel collection Credit Gift of Douglas Merrell Lot Number X5491.2010