1971 Salt Lake City: recognition Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: Publicity Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: Planning Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: Financial Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: General corespondence Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: General corespondence Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: visit report Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: publicity Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: planning Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: planning Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: planning Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: planning Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: publicity Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1971 Salt Lake City: general correspondence Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1968 Buffalo: Hotel correspondence Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1968 Buffalo: Society officers Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1979 Niagara Falls, New York: Committees Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
1979 Niagara Falls, New York: Program Math Eitemau Uwchlwytho gan The Welsh North American Association (WNAA)
