September 16, 1967 Season 1 24 Episodes How to watch? : Please click on the Season List, then select an episode. Wait for the video to load—usually, it doesn't take long! September 28, 1968 Season 2 25 Episodes How to watch? : Please click on the Season List, then select an episode. Wait for the video to load—usually, it doesn't take long! September 27, 1969 Season 3 25 Episodes How to watch? : Please click on the Season List, then select an episode. Wait for the video to load—usually, it doesn't take long! September 19, 1970 Season 4 24 Episodes How to watch? : Please click on the Season List, then select an episode. Wait for the video to load—usually, it doesn't take long! September 15, 1971 Season 5 24 Episodes How to watch? : Please click on the Season List, then select an episode. Wait for the video to load—usually, it doesn't take long! September 17, 1972 Season 6 24 Episodes How to watch? : Please click on the Season List, then select an episode. Wait for the video to load—usually, it doesn't take long! September 16, 1973 Season 7 24 Episodes How to watch? : Please click on the Season List, then select an episode. Wait for the video to load—usually, it doesn't take long! September 22, 1974 Season 8 24 Episodes How to watch? : Please click on the Season List, then select an episode. Wait for the video to load—usually, it doesn't take long!