I don't know why the Indiana University Sheet Music has copies of this visible online, since they don't normally display music that is still under copyright, but here it is:

A - YOU'RE ADORABLE (THE ALPHABET SONG)
Words and Music by Buddy Kaye, Fred Wise, Sidney Lippman
New York: Laurel Music Co., 1948.

VERSE: When Johnny Jones was serenading Mary,
He sure could quote a lot of poetry
But he'd much rather tell 'er
What he learned in his speller
When they both attended P. S. Thirty-three:

CHORUS: A, you're adorable,
B, you're so beautiful,
C, you're a cutie full o' charms
D, you're a darling,
and E, you're exciting,
and F, you're a feather in my arms.
G, you look good to me,
H, you're so heavenly,
I, you're the one I idolize,
J, we're like Jack and Jill,
K, you're so kissable,
L, is the love-light in your eyes.
M, N, O, P, I could go on all day.
Q, R, S, T, alphabetic'ly speaking you're okay!
U made my life complete.
V means you're very sweet.
Double-U, X, Y, Z.
It's fun to wander through
The alphabet with you
To tell you what you mean to me!