Edinburgh international book festival celebrates its 30th birthday this year. When it started in 1983 it had a programme of just 30 events; this year there are over 800 over 16 days, with Booker-winning authors standing shoulder to shoulder with graphic novelists, and polemical series curated by Margaret Atwood, Neil Gaiman, Kate Mosse and Gavin Esler.

There's also a series of lectures and author discussions that focus on significant political and cultural events that have taken place over the festival's history. Margaret Thatcher's 1983 general election win is discussed in Damien Barr's event: Maggie, Maggie, Maggie, Out, Out, Out!; the impact of £9000 tuition fees introduced in 2010 is the focus of Are We Heading Towards an Elitist Education System?; and Nate Silver talks about how he correctly predicted the outcome of all 50 states in the 2012 US election in his event, Playing the Numbers.

These are some of the historical moments singled out by the festival, but we'd like to know what events from the last three decades you have witnessed. Have you taken a photograph that documents an important political, social, sporting or cultural moment? A snap of New year's eve 1999, perhaps, a photograph of the Arab Spring, or were you there when Barack Obama was elected 44th President of the United States, ready waiting to take a picture with your camera phone? Or even the first Edinburgh books festival. Share your photograph with us via the blue button on this page and we'll display a selection of your images on the books site.