In pictures: Gay Icons -II

.

Novelist and poet Sylvia Towsend fell in love with a woman and they lived together for more than 30 years.

.

.

US actor Joe Dallesandro appeared in several of Andy Warhol's films. He identified himself as being bisexual and has been married three times.
.

Peter Tatchell co-founded the gay and lesbian campaign group Outrage!

.

British mathematician Alan Turing was alive when homosexuality was illegal. He was prosecuted after it was discovered he was gay.

.

.

The exhibition, which runs from 2 July to 18 October, coincides with the 40th anniversary of the Stonewall Riots in New York.