Astor, John Jacob


 * articles in The American Cyclopædia (1879):
 * articles in Encyclopædia Britannica, Ninth Edition
 * articles in The Encyclopedia Americana (1920)
 * articles in The New International Encyclopædia
 * articles in Collier's New Encyclopedia (1921)
 * articles in 1911 Encyclopædia Britannica
 * articles in The New Student's Reference Work
 * articles in Appletons' Cyclopædia of American Biography
 * articles in The New International Encyclopædia
 * articles in Collier's New Encyclopedia (1921)
 * articles in 1911 Encyclopædia Britannica
 * articles in The New Student's Reference Work
 * articles in Appletons' Cyclopædia of American Biography
 * articles in 1911 Encyclopædia Britannica
 * articles in The New Student's Reference Work
 * articles in Appletons' Cyclopædia of American Biography
 * articles in The New Student's Reference Work
 * articles in Appletons' Cyclopædia of American Biography
 * articles in Appletons' Cyclopædia of American Biography