Welcome Back, Kotter Season 4 Episode 21
Oo, Oo, I Do (2)
Arnold gets upset when the other Sweathogs tease him about not being able to provide for Mary, and he vanishes. Mary finds him and convinces him not to worry, and the two get married.
4 - 23The BreadwinnersJun. 08, 1979- 4 - 22I'm Okay, But You're NotJun. 01, 1979
- 4 - 21Oo, Oo, I Do (2)May. 25, 1979
- 4 - 20Oo, Oo, I Do (1)May. 25, 1979
- 4 - 19The Gang ShowMar. 17, 1979
- 4 - 18The Sweat Smell of SuccessMar. 03, 1979
- 4 - 17Come Back, Little ArnoldFeb. 24, 1979
- 4 - 16The Goodbye GuyFeb. 10, 1979
- 4 - 15Barbarino's BabyFeb. 03, 1979
- 4 - 14Bride and GloomJan. 13, 1979
- 4 - 13A Winter's Coat TailDec. 16, 1978
- 4 - 12A Little Fright MusicDec. 02, 1978
- 4 - 11Frog Day AfternoonOct. 09, 1978
- 4 - 10Washington's CloneNov. 11, 1978
- 4 - 9The Barbarino BluesNov. 04, 1978
- 4 - 8X-Rated EducationOct. 28, 1978
- 4 - 7Barbarino's Boo-BooOct. 21, 1978
- 4 - 6The SweatmobileSep. 11, 1978
- 4 - 5Once Upon a LedgeOct. 02, 1978
- 4 - 4Don't Come Up and See Me SometimeSep. 11, 1978
- 4 - 3Beau's JestSep. 25, 1978
- 4 - 2The Drop-Ins (2)Sep. 18, 1978
- 4 - 1The Drop-Ins (1)Nov. 25, 1978
