The PPA is proud to be celebrating its centenary in 2013, and we have a whole host of activity planned throughout the year to mark this major milestone.

The official opening ceremony was at Skyloft on February 25, where we started our search for the Cover of the Century by revealing the ten shortlisted titles.

Browse through photos of the event on our Flickr gallery and follow the link below to visit the voting site to choose your favourite - and don't forget to share your choice on Twitter.

There’s also our interactive timeline, which charts both the history of magazines and the evolution of the PPA from its origins in 1913.

Please join with us along the way - get in touch by email or tweet @PPA_Live using the hashtag #PPA100 - and help us celebrate the PPA centenary: our first 100 years.