[2] Douglas was the editor of Catalyst, the magazine of the 1320 Club, following the removal of John Herdman.

[1] In 1935 Douglas was apprehended by British agents in Geneva while attempting to buy ordinance.

[3] In 1938 Douglas was invited to visit the Brown House in Munich and met with Rudolf Hess.

[4] Following the strong result for the Scottish National Party in the 1962 West Lothian by-election, Douglas returned to Scotland.

In Edinburgh, he helped found the 1320 Club with many other veteran Scottish Nationalists including Hugh MacDiarmid and Wendy Wood.