This video includes a narration by Bishop Williamson of documents he published in a Rector’s Letter before the historic episcopal Consecrations of June 1988
The Ridgefield Letters and Winona Letters are available from the St Marcel Initiative – https://stmarcelinitiative.com/bookstore/?browse=books
A complete set of the Rector’s Letters is also available from Catholic Action Resource Center – https://ca-rc.com/books/letters-from-the-rector-complete-set