Aaron Pritzker (1869-?) was born in Russia and came to Boston in 1885. He married in 1897 to German-born Nettie Bergman (1874-?). They had three sons: Benjamin Morris (1899-1948), Bernard (1900-1967), Paul Percival (1902-1997). Aaron owned the business Boston Overall Co with the earliest mention found being 1915. There was a fire in 1917 in a nearby building causing major smoke and water damage to their stock, and last found mention of the company was in 1920. The earliest reference to "A. Pritzker & Sons Inc" found was in 1935 when its workers unionized. At that time the company employed "two hundred workers on leather garments". A nasty three-week strike occurred a year later "to preserve the union standards of wages and hours". I did not find mention of this company during WWII other than there are a number of Pritzker manufactured military garments still existing which are tagged as "war aid". The company was purchased by "Ethan Ames Manufacturing Co, Inc" in 1956. In his obituary, Benjamin was described as "president of A. Pritzker & Sons". He had a child Ronald who attended Brown University, graduated in 1949, and then worked in the family business. In his obituary, Paul (he seems to have been called "Percy" as a child) was described as "retired treasurer of the family business, A. Pritzker & Sons Inc., manufacturers of heavy leather and cloth outerwear". He graduated from Harvard University in 1923. He had two sons James A. and M. Frederick.