Gender: boy
School:
School #12A
There are two people under the name "Chaim Majer Himelfarb". They are both within the appropriate age limit for attending school #12A. One last lived on MUHEL 39, while one initially lived at MUHL 39 17. I am not sure if this is the same location or not.
For Chaim, born in 1932, he either changed addresses or was deported on July 14, 1944, but it is unclear. Using secondary sources on Chelmno, it says the deportations stopped after July 14, 1944. I'm not sure if there is a correlation between the dates, but I cannot assume he was on that last deportation to Chelmno.