Jack, I buy stuff years before I need it. So I have some of the matchbox cars I got 10 or 15 years ago. The Virtual Armchair General has paper model printouts for Gangster sets, they are in 28mm but can be resized for 15mm or 10mm or even 6mm!!! Both Blue Moon and Rebel Miniatures make 18/15 mm Gangsters.
Rod how do we help you get your groove back??