1) Abc-Def-Ghi - Elmo
2) A-The Sound of the Letter 'A' - Big Bird
3) B-Oscar's 'B' Sandwich - Oscar the Grouch
4) C-'C' Is for Cookie - Cookie Monster and the Company
5) D-Dee Dee Dee - Ernie
6) E-What's My Letter? - Guy Smiley and Prairie Dawn
7) F-Four Furry Friends - Grover Herry Monster Oscar the Grouch and Cookie Monster
8) G-Two 'G' Sounds - Grover and George
9) H-Ha Ha - Harvey Kneeslapper Herry Monster and Big Bird
10) I-I Stand Up Straight and Tall - Grover
11) J-'J' Friends - the Anything People
12) K-Herb's Silly Poem - Herbert Birdsfoot
13) L-La la la - Bert and Ernie
14) M-MMM Monster Meal - Herry Monster and Cookie Monster
15) N-The Noodle Story - Big Bird and Oscar the Grouch
16) O-Would You Like to Buy An 'O'? - the Salesman and Ernie
17) P-My Favorite Letter - the Anything People
18) Q-The Question Song - Grover and a Little Girl
19) R-The 'R' Machine - Ernie and Bert
20) S-Sammy the Snake - Sammy the Snake
21) T-The Tale of Tom Tattertall Tuttletut - Herbert Birdsfoot and the Anything People
22) U-'U' Lecture - Professor Hastings
23) V-Very Very Special Letter - Big Bird
24) W-The National Association of 'W' Lovers - Bert
25) X-'X' Marks the Spot - Sherlock Hemlock
26) Y-Just Because - Grover and a Little Girl
27) Z-The Zizzy Zoomrs - the Anything People