Burke, this (from the Levy collection) may not be the one, but a spelling song.

Title: Frances White's Spelling Song M-I-S-S-I-S-S-I-P-P-I.
Composer, Lyricist, Arranger: Lyric by Bert Hanlon and Benny Ryan. Melody by Harry Tierney.
Benny Ryan Harry Tierney Publication: New York: William Jerome Publishing Corp., Strand Theatre Bldg., 47th St., 1916.
Form of Composition: strophic with chorus
Instrumentation: piano and voice
First Line: When I was seven years of age I used to go to school
First Line of Chorus: M-I-S-S-I-S-S-I-P-P-I, That used to be so hard to spell

~Masato