Greyhawk Map: Missing Legend Keys

[Seraph of Babel]

The 4-Part Greyhawk Map has missing legends, which the download here does not include. Does anyone know what the following are supposed to represent?

Black Triangle - Red Astra (Solnor Compact), Greyhawk City = ???
White Star In Black Circle - Radigast City (Nyr Dyv) = capital city?

[Erik Mona]

Three black dots in a triangle is for Free City. The star in the circle is, as you guessed, capital city.

--Erik

[Amaril]

Erik Mona wrote:

Three black dots in a triangle is for Free City. The star in the circle is, as you guessed, capital city.

--Erik

I thought a black triangle is for a free city while three black dots in a triangle is ruins.