Soref was born in Russian Empire (Bilozirka, Ternopil Oblast, Ukraine), and immigrated to the United States. In 1921, he founded the Master Lock company in Milwaukee, Wisconsin. The company built locks based on Soref's designs using laminated steel to build strong yet inexpensive locks; he received over 80 patents for his designs.
- "The man who dreamed of locks". Milwaukee Notebook. 21 March 2017.
- "Harry E. Soref". geni_family_tree. Retrieved 2021-03-28.
- "March 2, 1887: Birth of the Master Locksmith". WIRED.
- "HARRY SOREF, 70, INVENTOR, IS DEAD; Devised Laminated Padlock --Founder of Master Co. Held Eighty Patents". The New York Times. 3 March 1957.