All the studio recordings (songs, demos and alternate versions) recorded by MJ during the Steeltown era (1967-1968). Songs and poems written but never recorded, live performances, covers and remixes by other artists are not included.
Sources : My personal research, Wikipedia, Michael Jackson: For The Record by Chris Cadman & Craig Halstead, Twitter account of Damien Shields and the amazing archives of the MJCast.

A Change Is Gonna Come : Recorded with the Jackson 5 in 1967-1968. Released in 1993 (Big Boy, Japonese release).
Baby You Don’t Have To Go : Recorded with The Jackson 5 in 1967-1968. Released in 1993 (Japonese release of “Big Boy”).
Big Boy : In late November/December 1967, the J5 recorded a new version of “Big Boy” at the Sunny Sawyer Studio in Chicago. The song was released as their first ever single on January 31, 1968.
Change Is Gonna Come : Recorded in 1967 with The Jackson. Released in 1999 (The Steel Town Sessions).
I’m A Big Boy Now* : On July 13, 1967 : The Jackson 5 made their first professionnal recording at the George & Ernie Leaner Studio for One-derful Records in Chicago. They recorded the song “I’m A Big Boy Now” but they did not sign any record deal. This recording session was found 42 years later in 2009 and released posthumously in 2014.
*Very first recording session.
I Found A Love : Recorded with The Jackson 5 in 1967-1968. Released in 2005 (Soul Masters).
I Never Had A Girl : Recorded in 1967 with the Jackson 5. Released in 1995 (Michael Jackson Pre History).
Jam Session aka Jam Session (Part One) : Released in mid-1968 (B-side od We Don’t Have To Be 21 (To Fall In Love) single) and on CD in June 1996 (The Jackson 5 pré-history The Lost Steeltown Recordings).
Jam Session (Part Two) aka Boys And Girls We Are The Jackson 5 : Recorded in 1967. Released in 1989 (The Jackson 5 – Beginning Years 1967-1968.
Let Me Carry Your Schoolbooks : Recorded in 1967 with the Jackson 5. Released in June 1996 (The Jackson 5 pré-history The Lost Steeltown Recordings).
Lonely Heart : Recorded in 1967 with The Jackson. Released in 1989 (Beginning Years 1967-1968).
Michael The Lover aka Some girls want me for a Lover : Recorded in 1967 with the Jackson 5. Released in 1989 (Beginning Years 1967-1968).
My Girl : Recorded in 1967 with the Jackson 5. Released in June 1996 (The Jackson 5 pre-history The Lost Steeltown Recordings).
Saturday Night At The Movies : Recorded in 1967 with the Jackson 5. Released in 1995 (Michael Jackson Pre History).
Some Gils Want Me For Their Lover : Recorded with The Jackson 5 in 1967-1968. Released in March 1971 as the B-side if You Don’t Have To Be Over 21 To Fall In Love.
Soul Jerk : Recorded in 1967 with the Jackson 5. Released in June 1996 (The Jackson 5 pre-history The Lost Steeltown Recordings).
Stormy Monday : Recorded in 1967 with The Jackson. Released in 1997 (Beginning Years 1967-1968).
Take My Heart : Recorded with The Jackson 5 in 1968. Found on a metal acetate with Take My Heart on Side 1 and Jackson Man on Side 2 by Adey Piere in Indiana in 2000. Remains unreleased.
Track Of My Tears : Recorded in 1967 with the Jackson 5. Released in 1989 (The Jackson 5 – Beginning Years 1967-1968).
Under The Boardwalk : Recorded in 1967 with the Jackson 5. Released in 1989 (The Jackson 5 – Beginning Years 1967-1968).
We Don’t Have To Be Over 21 (to Fall in Love) : Recorded in November/December 1967 and released in 1968.
You’ve Changed : Recorded in July 1967 with the Jackson 5. Released on January 31, 1968 as B-side of Big Boy’s single.