There is a good chance a particular catalog has sat on your desk, in your break room, or on a warehouse shelf at some point in your life - nearly 900 pages thick, printed twice a year, selling everything from cardboard boxes to industrial shelving. Almost nobody who has flipped through it could name the family that owns the company behind it. That's not an accident. Some of the largest private fortunes in North America were built entirely on the least glamorous businesses imaginable - packaging, wholesale distribution, industrial supply - by people who treated invisibility not as a side effect of success, but as the actual strategy.