I have a Samuel Cahan born July 12, 1885 in Russia. Died Oct 1973 in Wilmington, Delaware. He was a Pharmacist. Married to Rae Bellak and had 2 children Jules Louis and Selma. He later married Reba Wexler.
Hope this might be the Samuel you are looking for. Only Steven I have was born in the 1950's.
Let me know if I can be any more help
Emily
Emily@cahan.us