http://www.vads.ahds.ac.uk/collections/EEP.html
One of the photos is from 1978, the year the City Farm opened (I think) click here to view

permission to reproduce kindly granted, © Paul Trevor, 2007 all rights reserved
and the other is from 1992, with an intervention in the flying hut, if anyone knows who this was by......
click here to view

permission to reproduce kindly granted, © Paul Trevor 2007, all rights reserved