MARY M. O'LEARY
October 22, 2018
Inspired to become a nurse by her great-aunt, Mary O’Leary set out to make her own mark on the industry. She started by becoming a
Inspired to become a nurse by her great-aunt, Mary O’Leary set out to make her own mark on the industry. She started by becoming a
Marquis Who’s Who was established in 1898 and promptly began publishing biographical data in 1899. More than 120 years ago, our founder, Albert Nelson Marquis, established a standard of excellence with the first publication of Who’s Who in America.