1x20 - Oscar Cleans House

December 5, 1969

Sponsors: H, R, T, 8, 9

1x21 - Big Bird Discovers Balloons / Susan In The Kitchen

December 8, 1969

Sponsors: A, H, T, 10

1x22 - The Birthday Party

December 9, 1969

Sponsors: A, H, T, 10

1x23 - Which Order

December 10, 1969

Sponsors: A, H, T, 10

1x24 - What's Wrong with Big Bird

December 11, 1969

Sponsors: A, H, T, 10

1x25 - Dangerous Dragon

December 12, 1969

Sponsors: D, G, Z, 10

1x26 - Ice Cream

December 15, 1969

Sponsors: G, O, Z, 1, 2, 3

1x27 - Tony Saletan Visits

December 16, 1969

Sponsors: G, O, Z, 4, 5

1x28 - Hooper Super Elevator

December 17, 1969

Sponsors: G, O, Z, 6, 7

1x29 - H for Hello

December 18, 1969

Sponsors: C, H, T, 8, 9

1x30 - Granny Bird Visits (0030)

December 19, 1969

Sponsors: G, O, Z, 10

1x31 - Play Tricks

December 22, 1969

Sponsors: G, L, Y, 2, 3

1x32 - Shapes and Sizes

December 23, 1969

Sponsors: C, F, I, 2, 3

1x33 - Michael Cooney Visits

December 23, 1969

Sponsors: C, F, I, 2, 3

1x34 - Windy Day

December 24, 1969

Sponsors: C, F, I, 2, 3

1x35 - Shoe Shuffle

December 26, 1969

Sponsors: C, F, I, 2, 3

1x36 - Mr. Glopper Sets Up His Hot Dog Cart on the Street

December 29, 1969

Sponsors: L, U, Y, 4, 5

1x37 - Oscar's Missing Trash Can Lid

December 30, 1969

Sponsors: L, U, Y, 4, 5

1x38 - Gordon's Errands

December 31, 1969

Sponsors: L, U, Y, 4, 5

1x39 - Episode 39

January 1, 1970

Sponsors: L, U, Y, 4, 5

1x40 - Episode 40

January 2, 1970

Sponsors: F, K, N, 4, 5

1x41 - Mr. Hooper's Newspaper Machine

January 5, 1970

Sponsors: I, K, N, 6, 7

1x42 - Tater & Tot Make a New Friend

January 6, 1970

Sponsors: I, K, N, 6, 7

1x43 - The Kitchen Crew

January 7, 1970

The cast introduces L, Q and Y; Kermit explains big and small. Sponsors: L, Q, Y, 6, 7

1x44 - The Largest Waterslide

January 8, 1970

Sponsors: I, K, N, 6, 7

1x45 - Episode 45

January 9, 1970

Sponsors: I, K, N, 6, 7

1x46 - Big Top Bird

January 12, 1970

Sponsors: A, Q, U, 8, 9

1x47 - Episode 47

January 13, 1970

Sponsors: A, Q, U, 8, 9

1x48 - We Say Night Night

January 14, 1970

Sponsors: A, Q, U, 8, 9

1x49 - Episode 49

January 15, 1970

Sponsors: A, Q, U, 8, 9

1x50 - Episode 50

January 16, 1970

Sponsors: K, N, V, 8, 9

1x51 - The Art Contest

January 19, 1970

Sponsors: E, O, V, 10

1x52 - Episode 52

January 20, 1970

Sponsors: E, O, V, 10

1x53 - Episode 53

January 21, 1970

Sponsors: E, O, V, 10

1x54 - Oscar Bakes a Cake / Mr. Hooper Invents a 10 Machine

January 22, 1970

Oscar bakes a cake; Mr. Hooper invents a 10 machine. Sponsors: P, Q, U, 10

1x55 - Episode 55

January 23, 1970

1x56 - Mr. Hooper Bakes Oscar a Baked Bean Sundae (0056)

January 26, 1970

An orange-colored Oscar demands a baked-bean sundae; Kermit the Frog explains the word "in". Gospel diva Mahalia Jackson sings "He's Got the Whole World in His Hands", Animations of "Solomon Grundy" and "Wanda the Witch" make their debut.

1x57 - Episode 57

January 27, 1970

1x58 - Episode 58

January 28, 1970

1x59 - Balloon Activities / Big Bird's Rubber Love

January 29, 1970

1x60 - Episode 60

January 30, 1970

1x61 - Episode 61

February 2, 1970

1x62 - Episode 62

February 3, 1970

1x63 - Episode 63

February 4, 1970

1x64 - Episode 64

February 5, 1970

1x65 - It's Nice to Have Friends You Can Play With

February 6, 1970

1x66 - Episode 66

February 9, 1970

1x67 - Episode 67

February 10, 1970

1x68 - Episode 68

February 11, 1970

1x69 - Episode 69

February 12, 1970

1x71 - Episode 71

February 16, 1970

1x72 - Ethel Kennedy Visits / Big Bird Builds a Television Set

February 17, 1970

1x73 - Episode 73

February 18, 1970

1x74 - Episode 74

February 19, 1970

1x75 - Episode 75

February 20, 1970

1x76 - Episode 76

February 23, 1970

1x77 - Oscar Watches the Grouch Bowl / Mr. Hooper's Missing Glasses

February 24, 1970

1x78 - Episode 78

February 25, 1970

1x79 - Episode 79

February 26, 1970

1x80 - Episode 80

February 27, 1970

1x81 - Episode 81

March 2, 1970

1x82 - Episode 82

March 3, 1970

1x83 - Big Bird Moves Birdseed to His Nest

March 4, 1970

Big Bird moves birdseed to his nest. Sponsors: A, H, T, 10

1x84 - Rufus Opens a Lemonade Stand

March 5, 1970

1x85 - Episode 85

March 6, 1970

1x86 - Big Bird Draws an 'O'

March 9, 1970

1x87 - The Magnificent Block Building

March 10, 1970

1x88 - Oscar Needs a Job

March 11, 1970

1x89 - Episode 89

March 12, 1970

1x90 - Another Block Party

March 13, 1970

1x91 - Episode 91

March 16, 1970

1x92 - Episode 92

March 17, 1970

1x93 - Episode 93

March 18, 1970

1x94 - Episode 94

March 19, 1970

1x95 - Oscar Sings 'I Love Trash'

March 20, 1970

1x96 - Susan Re-enters the Workforce

March 23, 1970

1x97 - Episode 97

March 24, 1970

1x98 - Episode 98

March 25, 1970

1x99 - Episode 99

March 26, 1970

1x100 - Episode 100

March 27, 1970

1x101 - Episode 101

March 30, 1970

1x102 - Episode 102

March 31, 1970

1x103 - Episode 103

April 1, 1970

1x104 - Episode 104

April 2, 1970

1x105 - Episode 105

April 3, 1970

1x106 - Observing Seeds and Eggs

April 6, 1970

1x107 - Episode 107

April 7, 1970

1x108 - Pete Seeger Returns

April 8, 1970

1x109 - Episode 109

April 9, 1970

1x110 - Episode 110

April 10, 1970

1x111 - Episode 111

April 13, 1970

1x112 - Episode 112

April 14, 1970

1x113 - Episode 113

April 15, 1970

1x114 - Don McLean Visits

April 16, 1970

1x115 - Gordon, Susan, and the Kids Go On An Imaginary Car Ride (0115)

April 17, 1970

Kermit sings the original "Being Green". Ernie and Bert perform the classic "Banana Telephone" skit, Muppet Roosevelt Franklin sings "I'm Roosevelt Franklin", Bob sings an early version of "Who Are The People In Your Neighborhood?" plus Cookie Monster eats Ernie's cookie, and Oscar calls "Dial-a-Grouch".

1x116 - Episode 116

April 20, 1970

1x117 - A Visit From Odetta

April 21, 1970

1x118 - Garbage on Sesame Street

April 22, 1970

1x119 - Episode 119

April 23, 1970

1x120 - Episode 120

April 24, 1970