1903 plat is here https://www.historicmapworks.com/Map/US/482385/Dadeville++Lockwood+++Left/Dade+County+1903/Missouri/
There is school on the central square as well as a church. i am not sure about there ever being a courthouse as Melville/Dadeville wasn't the county seat as far as I can tell...Greenfield has been the county seat and had a courthouse and square in the 1860's I think.
Kinch West raided Melville before moving on to Greenfield where he was repulsed by local militia in October 1864.