Did Samuel have a brother named Max from Kossow, Austria? I found naturalization papers. Also 1920 Census. Also parents named Benjamin & Bella also from Kossow.
Schlome Mahlbauer 15 & father Burech Mahlbauer 42 arrived 12 Nov 1913 on ship Prince Friedrich Wilhelm from Kossow, Galicia.
If this sounds right, email me and I will send images.