American historian who with his wife Ariel (1898-1981) wrote the 11-volume Story of Civilization (1935-1975). |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
American railroad financier who built the Union Pacific Railroad (1863-1869). |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.