1999 Pacific Northwest Welsh Weekend: publicity Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
1999 Pacific Northwest Welsh Weekend: handbook Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
1998 Pacific Northwest Welsh Weekend ; publicity Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
1998 Pacific Northwest Welsh Weekend : handbook Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
