VT-1
DV2 (de Forest)
DV3 (de Forest)
RAC-3 (MYERS)
WD11
30
WE101F
WE102D
WE102F
UV199
UV200
UV201A
WE203B
WE203D
WE215A
401 (KELLOGG)
403 (KELLOGG)
CG-1162
D86326
AUDION (de Forest)
AUDIOTRON (CUNNINGHAM)
AP TWO IN ONE
ELECTRON RELAY (MOORHEAD)
MARCONI VT (MOORHEAD)
MOORHEAD ER
VAC-O-BUB
ARDE (EDISWAN)
RE114 TELEFUNKEN)
RE144 (TELEFUNKEN)
REN1104 (TELEFUNKEN)
KEN-RAD DETECTOR