Wm. B. Bleiman & Sons today Now in its third generation, was founded by William Bleiman and his son, Leonard in 1940. Leonard Bleiman, served as President of the Corporation for over thirty years, grew the business from a 5 man team to over 20 people strong, and 5 outside salespersons. Leonard Bleiman, was known as one of the last of the “gentlemen” in the industry.