The New International Encyclopædia…
“ The greatest absolute gain was made in the last decade of the century, the per cent. of increase being 26.0, as compared with 20.7 for the United States. The earlier movements of population into the State were largely composed of Southerners, who crossed the Ohio River into southern Illinois, or were attracted up the Mississippi River to the lead-mining districts in the northwestern part of the State. These, however, were soon greatly outnumbered by immigrants from the Eastern States. ”
