Gentle Readers: feed my habit

Given the t'web is global, and I'm getting readers from all over the world, I thought I'd ask you for help. I'm looking for a book (friends may not be overly-shocked by this announcement). It is Nancy Mitford's Wigs on the Green (1934), republished together with Highland Fling in the mid-1970s. Wigs is a satire about the British Union of Fascists, and she withdrew it when her sister Diana objected (Diana married Oswald Mosley, leader of the BUF). 

Nancy clearly didn't think much of either of them - she wrote to Churchill (a family acquaintance) objecting to the Mosleys' release from prison mid-way through the war. However, the book remained unavailable until this one 1970s reprint - and I can't find a copy anywhere. Tried Amazon, tried ABE etc. etc. If you see a copy, buy it, steal it, scan it - I'm planning a piece on satirical treatments of the BUF - Wodehouse (not entirely innocent himself), lampooned Mosley in a Jeeves novel as leader of the Union Jackshorts - all the more distinctive garments had already been bagged by other groups).