Conversation so far:
When was the album The Hangman's Beautiful Daughter released?
The album Hangman's Beautiful Daughter was released in 1968.
How successful was the album The Hangman's Beautiful Daughter?
The Hangman's Beautiful Daughter reached the top 5 in the UK album charts soon after its release in March 1968 and was nominated for a Grammy in the US.
Were there any famous singles from the album The Hangman's Beautiful Daughter?
Famous singles from The Hangman's Beautiful Daughter include The Minotaur's Song and A Very Cellular Song“
How successful was Wee Tam and the Big Huge?
Wee Tam and the Big Huge was released as a double album and also simultaneously as two separate LPs, a strategy which lessened its impact on the charts.
Were there any famous successful singles from Wee Tam and the Big Huge?
Did The Incredible String Band go on tour?
By early 1968 The Incredible String Band left behind their folk club origins and embarked on a nationwide tour incorporating a critically acclaimed appearance at the London Royal Festival Hall.

Question: Which other cities or countries did they tour?
Self-contained rewrite: Which other cities or countries did The Incredible String Band tour besides the United Kingdom?