Artifact Details Title Logic - Pluggable Unit Catalog Number 102712272 Type Still image Description B&W image of an early pluggable unit. It has 4 tubes with associated components. Recto White label : " NR 3138-Box4 #14 AIRC" Identifying Numbers #1685 Dimensions overall: 8 in x 10 in Category Identification photograph Credit Courtesy of Gwen Bell Lot Number X7413.2015