This might be a small lead for you.http://www.lthforum.com/bb/viewtopic.php?p=119427&sid=2d...
It includes following:
Bromann Brothers did in fact exit the cabinet making business by 1976. By that time they were producing very little in terms of commercial cabinetry, and were primarily involved in custom cabinets and repairs/refurbishments of existing cabinets.
As means of a little company history, my great-great-grandfather Heinrich Bromann came to the US from Germany (Bavaria to be exact) in 1869. He was a cabinet maker by trade. In 1871 his wife and sons Theodore, Edward, and Karl arrived in Chicago to join him. By 1886 father and sons were producing display cabinets for neighborhood grocery stores and other specialty stores (haberdasheries, women's clothiers, etc.). In 1887 Heinrich passed away and business was continued by my great-grandfather Theodore and his brothers. By the beginning of the 20th century their sons had joined the business and Bromann Brothers was employing about 20 people. Their specialty had become building and installing freezer cabinets and later walk-in freezers for neighborhood butchers and package goods stores throughout the west and north sides. It helped business that two of the daughters married into family businesses that relied on refrigeration: the Peter Fox family (Fox Deluxe beer) and the Elmer Kneip family (Kneip Corned Beef). The company's most profitable (if you can call it that) period was from about 1900 to about 1945.