©
kd1s: pre-morris_electronic
©
kd1s: original_npa
©
kd1s: motorelay_swtich
©
kd1s: morris_conc_dist_gastube
©
kd1s: morris_500
©
kd1s: gastube-crosspoint
©
kd1s: first_tt
©
kd1s: Card Translator for call routing
©
kd1s: Num1xbar_line_link_gas_tube
©
kd1s: 4ess_technologies
©
kd1s: 4ess
©
kd1s: 101ESS-200ln
©
kd1s: Switching technologies
©
kd1s: Translation Card
©
kd1s: Special Panel Links Frame
©
kd1s: Power Rotary Switch
©
kd1s: Panel Selector Frame
©
kd1s: Panel Lab
©
kd1s: Revised Panel Selector
©
kd1s: Early Crossbar Diagram
©
kd1s: AMA reader/punch
©
kd1s: AMA Center Philadelphia
©
kd1s: Key Switch Picturphone cards
©
kd1s: A Call Director
©
kd1s: Version 2 Picturephone
©
kd1s: A special 5 line set
©
kd1s: Looking down on the xmtr/rcvrs
©
kd1s: Same lengths
©
kd1s: Handset comparison
©
kd1s: Similar width too