http://jefferson.nygenweb.net/blairp.htm
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1900 US Census:
Full Name Andrew Blair
Age 46
Birth Year 1854
Birth Date Dec 1854
Birth Place New York
Gender Male
Marital Status Single
Census County Erie
State Pennsylvania
Race White
Ethnicity American
Father's Birth Place Scotland
Head Name Andrew Blair
Mother's Birth Place Scotland
Relationship Code Self
Relation to Head Head
Residence Erie City, Erie, Pennsylvania
Census Year 1900
Census Country Us
Batch Locality Pennsylvania, United States
Enumeration District 0090
Event Date 1900
Race White
Relation to Head Self
Incorporation Erie City
Ward 4
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Found on Ancestry.co.UK
http://boards.ancestry.co.uk/thread.aspx?mv=flat&m=146&p=surnames.blair
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Andrew J Blair in the Ohio, Wills and Probate Records, 1786-1998
Name: Andrew J Blair
Probate Date: 15 Aug 1876
Probate Place: Wood, Ohio, USA
Inferred Death Year: Abt 1876
Inferred Death Place: Ohio, USA
Item Description: Administrators and Executors Bonds and Letters, Vol 1-2, 1870-1893
Wife Mary M Blair