In what year did 'Wheel of Fortune' premiere?

Who created 'Welcome Back, Kotter'? On which network did 'Saturday Night Live' originally air? In what year did 'Saturday Night Live' premiere? Where is 'Saturday Night Live' set? Who created 'Wheel of Fortune'? On which network did 'Laverne & Shirley' originally air? In what year did 'Laverne & Shirley' premiere? Where is 'Laverne & Shirley' set?