Found a couple more lurking in a corner of the storage room.
'53 Caddy by Welly. A cheap car, but it looks pretty good on the layout.
Chrysler police car by Vitesse, and an Eligor '32 Ford roadster done up as a fire chief's car. These two cars apparently were made for the TCA Cal-Stewart meet, as they say Cal-Stewart Police and Fire Departments. Both of them will probably lose the Cal-Stewart markings; I bought the Chrysler as a donor car for a business coupe body kit, and I'll most likely clean the decals off the roadster.