[Chad Hauris]

If I remember correctly the Philco Safari has HV rectifier tubes in a tripler arrangement so it is almost solid state.
The Astronaut was a large screen (17 or 19") portable which came in a leatherette zippered case which could be zipped up like a suitcase. It also had a rechargeable built in battery pack and was solid state but may also have used a n HV rect. tube.
The GE b/w tube type sets along with many other small portables used a 33GY7 or in more robust applications a 38HK7 which is a single ended HO and damper tube.
The first series of GE portacolors used a single ended HO tube (with separate damper tube) but later ones went to one with a plate cap.

The Zenith 4-tube color sets used a tripler. There are some very late model RCA tube type portable color sets (ctc-63 I believe) which used a tripler and high focus voltage CRT. These probably gave the best performance of any RCA tube type set.