So far, I have found a couple of recipes that were posted on the Baking Circle. However, both appear to have come from cookbooks.
One is for Pulla Bread, posted by tuulikkii. However, it states that it is from The Finnish Cookbook, by Beatrice Ojakangas.
Another recipe, "Judy's Fluffy Cracked Wheat Bread," posted by ljgriffith, states that it is from More Bread Machine Magic.
I'm not sure that I should add recipes from other cookbooks, even if they were posted on the Baking Circle. However, there are some recipes that are here from the BC that did come from such sources.