Leo Wiener was a professor of Slavic languages at Harvard University and author of many books including the one referenced above. His son Norbert Wiener entered Tufts University at the age of 11 and is responsible for the field of cybernetics.
In this review of Ă˘â‚¬Ĺ“Africa and the Discovery of America, Volume IĂ˘â‚¬Âť, published in the New York Times, in August 1920, the author states WienerĂ˘â‚¬â„˘s thesis as;
Negroes from the northwestern coast of Africa crossed the Atlantic and landed in America an indefinite number of years before Christopher ColumbusĂ˘â‚¬â„˘s voyage of discovery in 1492 is the arresting decla ration made by Leo Wiener, Professor of Slavic Languages and Literatures at Harvard University, in his most recent work, the first volume of which has just been publishedĂ˘â‚¬Â¦.
Ă‚Â Ancient Chinese City in Mexico; 3,000 B.C.
Ancient Unknown City of 1,000 Houses on Paved Streets Found in California MountainsĂ‚Â