Approver Comments:
A birth date of March 30, 1928 makes Leon a little young to have been the L. Sokol who signed the album. At age 13 in 1941, it's unlikely (though not impossible) that he would have been a gymnasium student at the time the album was signed. That said, he was a "schueler" (student) in the ghetto in the 40s... possibly in gymanasium. Also, I don't see any other likely matches in the Lodz Ghetto Database. So, I'm categorizing your data as "possible."
Note that he moved from Alexanderhof Strasse 39 to Basar Gasse 10 Flat 26 in the ghetto.