Mary Sibbet Copley
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|Mary Sibbet Copley|
Copley circa 1920
June 19, 1843|
Armstrong County, Pennsylvania
|Died||June 6, 1929
|Cause of death||Pneumonia|
|Resting place||Allegheny Cemetery|
|Spouse(s)||William Thaw, Sr. (m. 1867–89)|
|Children||Harry Kendall Thaw
Alice Cornelia Thaw
|Relatives||Russell William Thaw (grandson)|
- "Died". Time magazine. June 17, 1929. Retrieved 2010-12-29.
- "Mary C. Thaw Dies; A Philanthropist; Mother of Harry K. Thaw Succumbs to Pneumonia in Her 87th Year. Lifetime Gifts $6,000,000. Widow of a Pittsburgher Who Figured Largely in Development of Pennsylvania Railroad. Her Father a Pioneer Editor". New York Times. June 10, 1929. Retrieved 2010-10-09.
- "Mrs. Thaw, 86 Dead At Home In Pittsburgh. Mother of Harry K. Thaw, Widely Known For Many Philanthropies, Victim of Pneumonia". Associated Press in the Hartford Courant. June 10, 1929. Retrieved 2010-10-09.
- "Harry Thaws Mother Dies of Pneumonia". Associated Press. June 10, 1929. Retrieved 2010-12-29.