Camra Beer Festival in the former Flower market at Covent Garden, Central London in 1975, the fore-runner to the Great British Beer Festival (GBBF) which takes place annually .
Take a look in the "Gallery" to view the photos as used in Camra's "Beer" magazine from August 2015.
To purchase copies I recommend Redbubble which offer an assortment of quality print options at reasonable prices.
A good option would be the calendar which contains 13 images, each about 24x30cm and the purchaser can set the start date.
I can honestly recommend the quality!