Benjamin F. Gue,
History of Iowa From the Earliest Times to the Beginning of the Twentieth Century
(1903)
“ Dubuque is described as a man of medium size, wiry and well built, with black hair and eyes, very courteous an affable, with all grace of the typical Frenchman. He was an accomplished diplomat but was not successful in making money. After eight years in mining and trading he made an effort to secure a title to his leased lands, the only title he held being the permit granted by a council of Fox Indians. The instrument executed was a concession or permit from the Indians to Dubuque to mine for lead ore on the lands described. ”
