Thre are only three ghits for "elebenty leben" and "Uncle Remus": link. Two are for this thread, the original citation from AWADmail that you mention, and another site that contains a pastiche of the Uncle Remus stories written by Joel Chandler Harris (link). A quick search through his works on Gutenberg reveal nothing. In fact, even when speaking in dialect, only the spelling eleven occurs:
Quote:
"Den w'en it seem lak de little Rabs, w'ich dey wuz mighty nigh forty-eleven un um, is all gone ter sleep, Brer Wolf, he crope 'roun', he did, en feel on de mantel-shelf, en feel, en feel, twel he come ter ole Brer Rabbit money-pus."

Ceci n'est pas un seing.