I contacted the Coca-Cola company to confirm corn-free status of their Simply Orange juices. This is what they say:
"Thank you for contacting The Coca-Cola Company. We appreciate the opportunity to respond to your question. All of the Simply Orange juices are made with 100% orange juice and do not contain corn. Additionally, Simply Limeade and Lemonade do not contain corn derived ingredients. We hope this helpful. Thank you for your interest in our brands.
Industry & Consumer Affairs The Coca-Cola Company" Another response can be found here.
"Thank you for contacting The Coca-Cola Company. The calcium that we use is man-made and not derived from corn. We hope this is helpful. Thanks
Industry & Consumer Affairs The Coca-Cola Company"
I tested the calcium enriched pulp-free. I got very sick, and even now 3 weeks later I'm still recovering. Another member of the Delphi site also tested Simply OJ (unenriched, original) with her corn-allergic child, and the child had an allergic reaction.
The original Simply Orange thread gives more of the full story: Simply Orange Juice
The "Simply" line of beverages may be listed as corn-free by the company, but human testing it didn't pass. Please use caution.