"Froncysyllte Male Choir concert in Seattle, 1986, organized by the Puget Sound Welsh Association. Miscellaneous planning correspondence. pages 1-14.
Publicity information, pages 15,16
Choir Brochure cover page 17

The choir visit to Seattle was also sponsored by the Broadway Symphony, Seattle and Seattle Chamber Singers.
Tour schedules and choir history pages 18-21
This is file number PSW00103 in the Welsh Heritage Center archive (see link)".
Permission from the Froncysyllte Choir has been received