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
1995 Pacific Northwest Welsh Weekend ; handbook Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
1994 Pacific Northwest Welsh Weekend: support documents Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
