Hi, just saw your message. Sorry I know that this was posted last year, but I thought that I could be of some help. My name, also, is Michael Delcour. I live in Southern Missouri. There is actually a "Book" of Delcour's, that was published. It's called "The Delcour Road." It has a list of Delcour's dating back from Pre-Revolutionary War. And from all of the Delcour's across the U.S. It was written by William and Mary Delcour.
Here: firstname.lastname@example.org This person's name is Rochelle. She seems to have a copy of the book. I don't know where you can get a copy of it, as I too have been looking to buy it for some time. I know that it is available at our Local Library. If you find out where to buy a copy, let me know. email@example.com