I bought a copy of Darkness Visible by Walton Hannah at a charity sale. I should have said before- I sell books on the internet to supplement my income, just in case readers think I have an odd taste in books. This book was about freemasonry. Tucked inside was a receipt from the Midland Masonic Depot who had a thriving business in Birmingham during the 1970s. The comany describes itself as "printers to the honourable fraternity of free and accepted masons of England." There was also a leaflet advertising other products from this company, including masonic handbooks, ladies evening menus and a selection of books. This business was situated off the Aston Expressway, however does not appear to be there now as the building has other companies and offices.A small piece of social history.