Gender: boy
School:
School #6
To find this information i went to the student list, found a student named Moniek Hinder, and searched him. i got no results so i searched his first name ( Moniek ) and his last initial (H) in the database for Lodz inhabitants. i got 3 results, and the closest one was one boy named Moniek Hendel. hes born in 1931, and thats within the right time frame for the school it said he went to (school #6, timeframe 1921-1935) so i think this is the student that signed the book.