I have a newspaper pic of Alex and Joan Baez at Amsterdam Airport, undated but probably early to mid-70s. I emailed Joan about it but she can't remember the occasion - 'probably both appearing at a musical festival or some such thing'!

btw, Alex was born in 1931, not 1925. Derrol Adams, his 'mentor' (in 'Frae Glesga Town') was born in 1925.