With Thomas Cook, formerly Cook's Tours, going down the Suwannee, here's a glimpse of better days - the company's former outlet on the corner of Buchanan Street and Mitchell Lane. The lion rampant advert in the window for the Empire Exhibition dates the picture to 1938.

Thomas Cook, Buchanan Street, 1938 (Glasgow City Archives)The then new BOAC block, 1970 (Glasgow School of Art Archives)The BOAC interior, 1970 (Glasgow School of Art Archives)

Thomas Cook, an abstinence campaigner, began his international travel company in 1841, with a successful one-day rail excursion at a shilling a head from Leicester to Loughborough on 5 July. Strictly teetotal, nae boozing!

After Cook's moved on, the site remained in the travel trade, with the building of the new British Overseas Airways Corporation HQ.

Back in a more gracious age, rather than booking a bargain package over the internet, well-to-do jet-setters would touch down for some personal service at the BOAC offices.

Nestled between Victorian and Georgian buildings, the sleek, copper-clad block, designed by Glasgow firm Gillespie Kidd & Coia, looked positively space age when it opened its doors in 1970.

As a child, before I learned how to spell, I thought BOAC and 'boak' meant the same thing, and had something to do with airsickness!

Since then, the shop has been home to All Saints, then Pretty Green.