6th Regional Welsh Gymanfa Ganu, June 28-30, July 1, 1962 Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
"Singing Festival at Welsh Presbyterian Church, Seattle. 1937 " Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
Musical Festival (Cymanfa Ganu) at Welsh Union Congreagational Church, Seattle, 1929 Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
Singing Festival at Welsh Presbyterian Church, Seattle. 1927 Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
Concerts by the Maelgwn Male Choir in Seattle and Tacoma, 1997 Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
Y Ddolen, society newsletter Puget Sound Welsh Association, Seattle. October/November/December 2013 Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
Y Ddolen, society newsletter Puget Sound Welsh Association, Seattle. July/August/September 2013 Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
Y Ddolen, society newsletter Puget Sound Welsh Association, Seattle. January/February/March 2013 Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
A Celebration of Welsh Music in Seattle in 1998 Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
Poster and flyer for A Welsh Christmas Concert with Telyneg. Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
Welsh Harp, Song and Legend Concert with Robin Huw Bowen and Sue Jones Davies, Seattle 2000 Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
Documents relating to Dunvant Male Choir visit to and concert in Seattle in 1995 Math Eitemau Uwchlwytho gan Puget Sound Welsh Association
