Artifact Details Title ET 2 FEB 72 H CIRCLED Catalog Number 102654017 Type Software Description One of 4 items created from contents of a papertape carton labeled, on a narrow edge, "CERT (ABD) FILESYS (ABD) ET " Barcodes: 102654015-18 System Requirements DEC PDP-1 Format Paper tape Series Title PDP-1 / Software / Paper Tape Lot Number X3602.2006