The Norfolk Do-Nut Dinette opened in 1952 and has always been strictly counter service. They make their own donuts and feature a pale green formica interior (part of a 1960s remodeling). The place closed in 2005 shortly after these photos were taken when the owners retired. The building's fate was uncertain until 2006 when it reopened under new management. They continue using the same name, the original donut-making equipment, and have left everything else intact. For more, see this website.

Another example of the chain is Victor's Grill which went by the Do-Nut Dinette name until at least 1975. [photos thanks John Hertel]

The North Loudoun Diner has been painted bright green but still retains the donut shaped rooftop sign. See this 1948 patent for what these buildings looked like originally and a now-gone Waynesboro, VA location. Here's what the North Loudoun Diner looked like in 2005 when it was known as the Donut Castle.

A Front Royal, VA location was known as the Fox Diner in 2003. However, the building was vacant and in poor shape when I saw it in 2008 and the sign had been removed.