Breton chocolate pound cake tracked down

I've posted before about Breton chocolate pound cake, made from the never-failing recipe that works even at altitudes over 7,000 feet and in a tube pan or a loaf pan, with or without the ornamentation of the chocolate glaze. Here's a link to the main entry, and a search of this blog will find other references. I've even put up a photo at Flickr showing one version. Cecily Brownstone, the AP syndicated food writer, touted the recipe and definitely attributed it to Family Circle (May 1976), reporting that it was reprinted in a Family Circle Cookbook published by Quadrangle (hardcover, 1974; Family Circle editors and Jean Anderson). (A collection of Brownstone's papers is at NYU.)