Incoming Resources
- The ancestry of my children, Anna Maarit Threlfall, John Hyyrylainen Threlfall, Margaret Ellen Threlfall, Robert Andrews Threlfall, compiled by John Brooks Threlfall, Volume I
- The ancestry of my children, Anna Maarit Threlfall, John Hyyrylainen Threlfall, Margaret Ellen Threlfall, Robert Andrews Threlfall, compiled by John Brooks Threlfall, Volume II
- The ancestry of my children, Anna Maarit Threlfall, John Hyyrylainen Threlfall, Margaret Ellen Threlfall, Robert Andrews Threlfall, compiled by John Brooks Threlfall, Volume III
- The ancestry of my children, Anna Maarit Threlfall, John Hyyrylainen Threlfall, Margaret Ellen Threlfall, Robert Andrews Threlfall, compiled by John Brooks Threlfall, 1995, Supplement