JACK SOO;MAX GAIL;HAL LINDEN;JOHN TRAVOLTA;LAWRENCE HILTON-JACOBS;RON PALILLO;ROBERT HEGYES;ABE VIGODA;GREGORY SIERRA;RON GLASS [Getty Images]

BARNEY MILLER - "Fear of Flying" with Cast of "Welcome Back, Kotter" - Airdate: January 29, 1976. (Photo by Walt Disney Television via Getty Images Photo Archives/Walt Disney Television via Getty Images)
JACK SOO;MAX GAIL;HAL LINDEN;JOHN TRAVOLTA;LAWRENCE HILTON-JACOBS;RON PALILLO;ROBERT HEGYES;ABE VIGODA;GREGORY SIERRA;RON GLASS

Walt Disney Television ABC Photo Archives