The Chaldean American Chamber of Commerce publishes a newsletter every couple of months with interesting entrepreneurial stories and what not. The January and February issue was very interesting because it shows a few photos of the early Chaldean immigrant business owners in the United States.
A quick excerpt: "Having been introduced to the retail grocery trade, historical records show that by 1923 there were 4 Chaldean owned stores and that number had grown to 120 by 1962"
There are also images in the article from the early 1950's and 1960's of some of the Chaldean people with their businesses. It is a very good read you can find it here on page 12.