Andrew Ewing, the man behind the remarkable Buttercup Dairy Company was a remarkable man. He was a philanthropist, giving away much of the fortune he made through his company.
Bill Scott has recently published a book which charts the origins and history of Ewing and the Buttercup Dairy Company. It includes pictures of some of the Edinburgh shops where the distinctive Buttercup features remain to be seen (Warrender Park Road, Raeburn Place, Comiston Road, Elm Row and Glanville Place).
You can buy the book here. More information at this website. Or ask someone in the area old enough to remember the shops. I note Amazon are out of stock. The Meadows Lamp Gallery might have a few copies and the publisher supplies direct.