Reference 1: Population.
Reference 2: New York, Pennsylvania, Illinois, Ohio, Missouri, Texas, Massachusetts, Indiana, Michigan, Iowa, Georgia, Kentucky, Wisconsin, Tennessee, North Carolina, New Jersey, Virginia, Alabama, Minnesota, Mississippi, California, Kansas, Louisiana, South Carolina, Arkansas, Maryland, Nebraska, West Virginia, Connecticut, Maine, Colorado, Florida, Washington, Rhode Island, Oregon, New Hampshire, South Dakota, Vermont, North Dakota, Utah, Montana, Delaware, Idaho, Wyoming and Nevada.
Source: http://en.wikipedia.org/wiki/1900_United_States_Census
Reference 2: New York, Pennsylvania, Illinois, Ohio, Missouri, Texas, Massachusetts, Indiana, Michigan, Iowa, Georgia, Kentucky, Wisconsin, Tennessee, North Carolina, New Jersey, Virginia, Alabama, Minnesota, Mississippi, California, Kansas, Louisiana, South Carolina, Arkansas, Maryland, Nebraska, West Virginia, Connecticut, Maine, Colorado, Florida, Washington, Rhode Island, Oregon, New Hampshire, South Dakota, Vermont, North Dakota, Utah, Montana, Delaware, Idaho, Wyoming and Nevada.
Source: http://en.wikipedia.org/wiki/1900_United_States_Census
