Hotel Whitcomb on Market near Civic Center was built in 1910. It served as a temporary City Hall until the current one opened in 1915. I was sad to see some years ago that it no longer says "City Hall" over the entrance.
The Whitcomb housed at least two radio stations over the years. KFRC started there in 1924. It moved its studio and transmitter the City of Paris store in 1925. KYA's studios were there from 1930 to 1934 and its transmitter was there from 1930 to 1937.
I think I remember Jazzbeaux broadcasting from there in the 1970s, but I can't find a record of it.