- Biography - Nicolay, Helen (1866-1954): An article from: Contemporary Authors by Gale Reference Team, 2002-01-01
- Andrew Jackson, the fighting president, by Helen Nicolay ... by Helen (1866-1954) Nicolay, 1929
- Our Nation in the Building, by Helen Nicolay...illustrated with portraits by Helen (1866-1954) Nicolay, 1916-01-01
- The book of American wars by Nicolay. Helen. 1866-1954, 1918
- The Boy's Life Of Abraham Lincoln by Nicolay Helen 1866-1954, 2010-10-15
- Our Nation In The Building by Nicolay Helen 1866-1954, 2010-10-06
- Personal Traits Of Abraham Lincoln by Nicolay Helen 1866-1954, 2010-10-14
- Personal traits of Abraham Lincoln by Helen Nicolay 1866-1954, 1919-12-31
- The Boys' Life Of Abraham Lincoln by Nicolay Helen 1866-1954, 2010-10-15
- The Boys' Life Of Abraham Lincoln by Nicolay Helen 1866-1954, 2010-10-15
- The Boy's Life Of Abraham Lincoln. With Illus. By Jay Hambidge And Others. by Nicolay Helen 1866-1954, 2010-09-30
- The Boys' Life Of Lafayette by Nicolay Helen 1866-1954, 2010-10-15
- The boys ' life of Abraham Lincoln. by Helen Nicolay; with illus by Nicolay. Helen. 1866-1954., 1906-01-01
- The boys' life of Abraham Lincoln by Nicolay. Helen. 1866-1954, 1906-01-01
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