It's not unusual
From LGBT Archive
It's not unusual: a history of lesbian and gay Britain in the twentieth century is a book by Alkarim Jivani, published 1997 by Michael O'Mara Books, to accompany a BBC television series. It is based on the testimonies of 36 men and women covering the ground from 1918 to the 1990s.
External links
http://openlibrary.org/works/OL2681606W/It%27s_Not_Unusual Open Library entry