The Hazeltine 1200 video terminal, circa 1969. Specifications not yet available, but as I recall it displayed only 64 characters of ASCII (no lower case display, although it could send lowercase), in 24 lines of (I'm not sure) 72, 74, or 80 columns each, in a luminous green phosphor. I believe the speed was 1200 bps.
The H1200 was possibly the first popular general-purpose video terminal, meaning it had an ordinary RS-232C serial interface that allowed it to connect to virtually any kind of computer, and it used in-line "escape sequences" for cursor positioning and other effects. At Columbia, the only video terminal that preceded it was the IBM 2260, which was IBM-specific, connecting only to an IBM control unit.
The example in the picture (in the collection of Carl Friend) doesn't look at all like the ones I remember. Ours had a detached keyboard with a somewhat different layout (e.g. special function keys and yellow-orange lamps on the left); the keys were cylindrical rather than squarish, and the whole thing was cream-colored -- no black. (How many different Hazeltine 1200s could there have been?) Unfortunately no photos of -- or manuals for -- Columbia's H1200s have been located.
Photo: Carl Friend